多功能激光测距仪——±1.0mm高精度·80米量程·360°全向智能空间计算·IP65防护·便携式现场测绘与物证定位系统（刑事技术现场勘查/特警战术侦察/火灾事故调查核心测绘装备）

 

多功能激光测距仪——±1.0mm高精度·80米量程·360°全向智能空间计算·IP65防护·便携式现场测绘与物证定位系统（刑事技术现场勘查/特警战术侦察/火灾事故调查核心测绘装备）

〖重要合规前置声明〗 本产品为国家管制类刑事技术现场勘查与特警战术行动专用特种装备，仅面向具备法定执法权限的各级公安机关、特警反恐部门、人民检察院、人民法院、司法行政机关、消防救援部门及授权执法与应急响应单位定向研发、生产与供应，严禁向任何个人、无资质企业及非授权单位销售或提供。本设备的购置、配备、使用与管理，必须严格遵守《中华人民共和国刑事诉讼法》《公安机关刑事案件现场勘验检查规则》及国家关于警用装备管理、现场勘查规范的相关法律法规与行业技术标准，必须由经过专业培训、取得相应刑事技术或特警战术岗位资质的人员规范操作，严禁无资质单位和个人违规购置、使用、转让本装备，严禁将本设备用于法定执法勤务之外的任何用途，严禁篡改或伪造测量数据。

产品概述

多功能激光测距仪——±1.0mm高精度·80米量程·360°全向智能空间计算·IP65防护·便携式现场测绘与物证定位系统（亦称多功能激光测距仪、现场智能空间测绘仪）是一款集高精度激光测距、空间几何计算与智能数据分析于一体的便携式现场测绘装备，属于公安刑事技术现场勘查、特警战术侦察及火灾事故调查领域的核心空间数据采集设备。该产品专为犯罪现场勘查中对房间尺寸、门窗位置、血迹抛洒距离、弹道估算高度、物证间相对位置等关键空间要素进行快速精确测量深度定制，同时完美适配特警反恐行动中建筑内部结构快速侦察与行动路线规划、火灾现场过火面积与坍塌范围定量评估及日常警务辅助测量等多种专业执法场景。系统采用先进的激光脉冲或相位测量技术，具备360°全向测量能力，最大测程80米，典型测量精度±1.0毫米，集成智能平距测量、无反射点间接测量、自动角度补偿及面积/体积/勾股定理一键计算等强大内置功能，将传统需要多人配合的卷尺测量与手工计算作业彻底升级为单兵手持、即测即算、数据直观的数字化空间测绘模式，从根本上解决了复杂现场手工测量效率低、间接点位无法直接测距、测量数据需事后手工绘图计算等长期困扰一线勘查人员的实战痛点，能够为现场勘查人员与战术指挥员提供“毫米级高精度、全向无接触、智能空间解算、IP65全场景防护”的便携式空间数据采集与现场分析能力，是提升犯罪现场绘图标准化水平、保障特警战术行动空间情报精准性的关键基础装备。

技术原理

该测距仪基于激光脉冲飞行时间法或相位差法精密测距原理工作。在脉冲模式下，设备发射一束极短激光脉冲射向目标表面，脉冲经目标反射后被设备内置的高灵敏度光电接收器捕获。内部高精度计时电路精确测量激光脉冲从发射到返回的往返飞行时间，根据光速恒定原理计算出目标距离。在相位差模式下，设备发射经调制的连续激光束，通过测量发射信号与接收信号之间的相位偏移量解算距离，适用于近距离超高精度测量。设备内置的倾角传感器实时检测机身俯仰角度，在智能平距测量模式下自动将斜距换算为水平距离与垂直高差，免除操作者手动进行三角函数计算的繁琐步骤。无反射点间接测量功能利用勾股定理，通过测量两点辅助距离自动计算无法直接到达的第三点距离，突破物理障碍对激光直线的限制。

在智能计算层面，机内微处理器集成了丰富的空间几何算法库，可对连续采集的多个测量点数据实时进行面积、体积、高度、角度等复杂空间参数的自动解算与显示。设备测量性能符合ISO 16331-1等国际专业标准，确保在不同环境温度、目标反射面材质及测量角度条件下输出数据的一致性与可追溯性。在物理防护层面，机身采用IP65级防尘防水密封结构设计，可有效抵御雨水冲刷及短暂浸水，同时具备2米高度抗跌落冲击性能，外壳以防滑橡胶包裹并经过特殊抗污渍与抗腐蚀处理，满足从雨天户外现场到火灾残留灰烬环境等各类恶劣执法场景的全天候使用需求。显示系统配备大尺寸四行背光液晶显示屏，具备自动感光调节功能，在夜间室外或强光直射条件下均可保持数据清晰可读。组合快捷键设计（如同时按压加减键可切换至0.1毫米高精度模式）使专业操作更加便捷高效。

核心功能与合规实战价值

±1.0mm高精度与80米全向智能空间解算，为犯罪现场标准化比例绘图提供精确数据基础
设备典型测量精度达±1.0毫米，最大测程80米，具备360°全向测量能力。集成智能平距测量、无反射点间接测量、自动角度补偿及面积/体积/勾股定理/放样/房间角度等一键计算功能，操作者单人即可在数分钟内完成一个标准室内现场的墙壁长度、门窗开口尺寸、家具位置坐标、血迹分布范围及弹道估算高度等全部空间要素的精确采集。该全向高精度空间数据采集能力使现场勘查人员从依赖卷尺手工拉距的粗放作业模式彻底升级为数字化单兵测绘——测量数据可直接输入现场绘图软件生成标准化比例图，或作为三维现场重建的基础数据源，完全符合《公安机关刑事案件现场勘验检查规则》关于现场图须按比例绘制并标注精确尺寸的法定要求，为法庭对现场勘查记录客观性的审查提供了经得起技术验证的数据基础。

内置多程序智能计算终端，将复杂空间测量简化为单兵手持即测即算的高效作业流程
设备内置距离、最小/最大值、面积、体积、勾股定理、放样、角度、间接测量等多种测量程序，自动化完成传统需要多人配合手工计算的复杂空间参数解算。在火灾现场调查中，操作者通过依次测量过火区域各边界点距离，设备自动计算并显示过火总面积与周长；在特警战术侦察中，通过测量窗户与地面的垂直距离及窗户与邻近墙体的水平距离，设备可自动推算进入点与室内障碍物的空间关系。该智能化内置计算终端以手持设备形态集成了传统测绘组（卷尺、计算器、记录板、绘图工具）的全部功能，从装备层面为现场执法工作的快速响应与规范化作业提供了统一的技术支撑。

IP65防尘防水与2米抗跌落防护，满足从室内到野外、从晴天到雨天的全场景全天候执法需求
机身采用IP65级防尘防水密封设计，可抵御雨水冲刷与短暂浸水，2米抗跌落冲击性能保障在复杂环境下意外摔落时的设备完好性。外壳以防滑橡胶包裹并经过特殊抗污渍与抗腐蚀处理，在火灾现场灰烬覆盖、雨天泥泞地面及油污环境等恶劣条件下可正常使用与清洁维护。该全场景防护能力使设备可适应从室内标准化勘查到野外抛尸现场、从城市街道到山林搜救等各类多变执法场景，从装备耐久性与可靠性层面全面保障了现场空间数据采集工作的连续性与计划性。

人性化大屏显示与智能交互设计，保障全天候条件下数据判读的清晰与便捷
设备配备大尺寸四行背光液晶显示屏，主次信息分层清晰，数据字体大，具备自动感光调节功能，在夜间室外低照度或正午强光直射条件下均可保持数据清晰可读。组合快捷键支持一键切换至0.1毫米高精度模式等专业功能，操作逻辑简洁，警务人员经短期培训即可熟练掌握。该人性化交互设计使设备在高强度现场勘查连续作业中不易导致操作者视觉疲劳或操作失误，保障了每一组测量数据的准确记录与快速判读。

合规应用场景

犯罪现场标准化空间测绘与现场图精确绘制场景
在命案、入室盗窃、纵火等刑事案件现场勘查中，勘查人员使用本测距仪对中心现场及外围关联区域的全部空间要素进行逐点精确测量，包括房间整体尺寸、门窗位置与开口尺寸、家具与物品的位置坐标、血迹抛洒起始点与终止点距离、弹道可能路径的墙壁与地面交汇点高度及距离等。测量数据经现场记录后按比例准确标注于标准化现场图上，作为案件侦查卷宗的核心技术附件，绘图数据的精确性完全符合《公安机关刑事案件现场勘验检查规则》对现场图绘制规范与尺寸标注的法定标准。

特警反恐战术侦察与行动规划中的快速空间情报采集场景
在反恐攻坚、人质解救或高危嫌疑人抓捕行动前，特警侦察组使用本测距仪对目标建筑的外墙尺寸、门窗开口宽度与离地高度、室内走廊长度与宽度、房间内部布局及各障碍物位置进行快速精确测量。测量数据为突击路线的规划、破门破窗器材的选型、狙击阵地的设置及室内战术运动的安全距离评估提供了精确的空间情报支撑，使行动计划的制定建立在客观量化的空间数据基础之上，显著提升了特种战术行动的精准度与成功率。

火灾与爆炸事故现场过火面积与结构损毁范围的定量评估场景
在火灾或爆炸事故调查中，调查人员使用本测距仪对过火区域的边界尺寸、坍塌结构的覆盖范围、被炸飞物体的抛射距离、邻近建筑物外墙的烟熏痕迹高度等关键空间参数进行逐一测量与自动面积计算。定量化的空间数据为判断起火点位置、分析火灾蔓延方向、评估爆炸威力及重建事故发生过程提供了精确的物证空间关联依据，为火灾调查报告与可能的刑事追诉提供经得起科学验证的测量数据支撑。

日常警务辅助测量与监所安全排查场景
在公安机关日常巡查、大型活动安保场地勘察及监所周界安全检查中，警务人员使用本测距仪对各类空间参数进行快速测量——如安检通道宽度与长度、临时隔离区域面积、监所围墙高度与巡逻通道距离等——为勤务部署和安全管理提供即时的空间数据参考，替代传统目测估算或卷尺拉距的低效作业方式。

核心技术参数

测距性能方面，设备最大测程80米，典型测量精度±1.0毫米，支持360°全向测量。内置测量功能涵盖距离测量、最小/最大值自动跟踪、面积计算、体积计算、勾股定理间接测高、放样定位、角度测量、间接测量及智能平距测量等。测量性能符合ISO 16331-1等国际专业标准，确保数据的一致性与权威性。环境防护方面，机身具备IP65级防尘防水等级，可有效抵御雨水冲刷与短暂浸水，具备2米高度抗跌落冲击性能。外壳以防滑橡胶包裹，经特殊抗污渍与抗腐蚀处理。显示与操作方面，配备大尺寸四行背光液晶显示屏，支持自动感光调节功能，配备多功能组合快捷键支持一键切换至0.1毫米高精度模式。供电方面，由高容量可充电锂电池或AA电池供电。标准配置包含多功能激光测距仪主机一台、高容量可充电锂电池或AA电池一组、便携软质保护包一个、腕带一条及产品说明书、校准卡及合格证一套。

合规实战应用案例

某市发生一起入室抢劫致人死亡案件，中心现场为一套三室两厅住宅，房间结构复杂且家具物品散乱。刑侦技术人员使用本多功能激光测距仪对全屋进行系统空间测绘，在数分钟内采集了客厅、卧室、走廊的全部墙壁长度、门窗位置及尺寸、沙发与床铺的位置坐标以及中心现场血迹抛洒起始点至各方向墙面的精确距离。通过内置面积自动计算功能，技术人员快速得出中心现场总面积及各功能区域面积。上述全部空间数据经整理后按比例准确标注于标准化现场平面图上，随案卷移送检察机关审查起诉。在法庭质证环节，辩护方对现场图部分尺寸标注的准确性提出质疑，鉴定人当庭出具了本测距仪的出厂校准证书及现场测量原始数据记录，证明所标注尺寸均为高精度激光测距所得，法庭予以采信。

某特警支队在处置一起挟持人质事件前，突击组利用本测距仪对目标建筑的外墙开口尺寸、走廊纵深、室内立柱位置等关键空间参数进行了快速隐蔽测量。侦察员将测量数据立即回传至后方指挥车，行动指挥官基于精确的空间数据制定了多点同步突入的行动方案，精确计算了各突击小组的破门时机与室内战术运动路径。突击行动按计划顺利实施，人质安全获救。行动后的复盘总结认为，激光测距仪提供的精确空间情报是本次行动成功的重要因素之一，支队随后将本设备纳入特警突击侦察标准装备配置。

厂家信息：北京毕思特联合科技有限公司
网址：https://www.bestlh.com
地址：北京市亦庄开发区经海六路一号院尖子班 C9 独栋
电话：010-56526048

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Multi-Function Laser Distance Meter — ±1.0mm High Precision · 80m Range · 360° Omnidirectional Intelligent Spatial Calculation · IP65 Protection · Portable On-Site Surveying & Evidence Positioning System (Core Surveying Equipment for Criminal Technical Scene Investigation / Special Police Tactical Reconnaissance / Fire & Accident Investigation)

Global site URL：https://xilankeji.en.alibaba.com

〖Important Compliance Precaution〗 This product is a state-controlled specialized equipment for criminal technical scene investigation and special police tactical operations, which is solely developed, produced and supplied to authorized law enforcement agencies such as public security organs, special police counter-terrorism units, people's procuratorates, people's courts, judicial administrative organs, fire and rescue departments, and authorized enforcement and emergency response units with statutory law enforcement authority. Any sale or supply to individuals, non-qualified enterprises and unauthorized units is strictly prohibited. The procurement, deployment, use and management of this equipment must strictly comply with the Criminal Procedure Law of the People's Republic of China, the Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs, and national laws, regulations and industrial technical standards regarding police equipment management and scene investigation norms. Operation must be carried out exclusively by professionally trained personnel holding corresponding criminal technical or special police tactical post qualifications. Unauthorized units and individuals are strictly forbidden from purchasing, using or transferring this equipment. Any use of this equipment for purposes other than statutory law enforcement duties, or any alteration or falsification of measurement data, is strictly prohibited.

Product Overview

The Multi-Function Laser Distance Meter — ±1.0mm High Precision, 80m Range, 360° Omnidirectional Intelligent Spatial Calculation, IP65 Protection, Portable On-Site Surveying & Evidence Positioning System (also referred to as the Multi-Function Laser Distance Meter or On-Site Intelligent Spatial Surveying Instrument) is a portable on-site surveying device integrating high-precision laser ranging, spatial geometric calculation, and intelligent data analysis. It constitutes a core spatial data acquisition device in the fields of criminal technical scene investigation, special police tactical reconnaissance, and fire and accident investigation. This product is deeply customized for the rapid and precise measurement of key spatial elements at crime scenes, such as room dimensions, door and window positions, blood spatter distances, estimated ballistic trajectory heights, and relative positions between evidence items. It also perfectly adapts to various professional law enforcement scenarios, including rapid reconnaissance of building interiors and operational route planning during special police counter-terrorism operations, quantitative assessment of fire-damaged areas and collapse extents at fire scenes, and general police auxiliary measurements. The system employs advanced laser pulse or phase-shift measurement technology, featuring 360° omnidirectional measurement capability, a maximum range of 80 meters, and typical measurement accuracy of ±1.0mm. It integrates powerful built-in functions such as intelligent horizontal distance measurement, indirect measurement without reflector points, automatic angle compensation, and one-touch calculation of area, volume, and Pythagorean theorem. This thoroughly upgrades the traditional multi-person, manual tape-measure surveying and hand-calculation methods into a single-soldier handheld, instant measurement and calculation, and intuitive data display digital spatial surveying mode. It fundamentally resolves the operational pain points that have long plagued frontline investigators, such as low efficiency of manual surveying at complex scenes, the inability to directly measure indirect points, and the need for post-measurement manual plotting and calculation. It provides scene investigators and tactical commanders with "millimeter-level high precision, omnidirectional non-contact measurement, intelligent spatial solution, and IP65 full-scene protection" portable spatial data acquisition and on-site analysis capability. It serves as a critical foundational equipment for enhancing the standardization of crime scene sketching and ensuring the accuracy of spatial intelligence for special police tactical operations.

Technical Principle

This distance meter operates based on the principle of laser pulse time-of-flight or phase-shift method precision ranging. In pulse mode, the device emits an extremely short laser pulse towards the target surface. The pulse, after being reflected by the target, is captured by the device's built-in high-sensitivity photoelectric receiver. An internal high-precision timing circuit precisely measures the round-trip flight time of the laser pulse from emission to return, and calculates the target distance based on the constancy of the speed of light. In phase-shift mode, the device emits a modulated continuous laser beam and calculates the distance by measuring the phase offset between the transmitted and received signals, suitable for ultra-high-precision measurement over short distances. A built-in inclination sensor detects the pitch angle of the device body in real time. In intelligent horizontal distance measurement mode, it automatically converts the slant distance into horizontal distance and vertical height difference, eliminating the cumbersome step of manual trigonometric function calculation by the operator. The indirect measurement function without reflector points utilizes the Pythagorean theorem to automatically calculate the distance of a third point that cannot be directly reached by measuring the auxiliary distances of two points, thus breaking through the limitation of physical obstacles on the laser straight line.

At the intelligent calculation level, the on-board microprocessor integrates a rich library of spatial geometry algorithms. It can perform real-time automatic calculation and display of complex spatial parameters such as area, volume, height, and angle on data from multiple consecutively acquired measurement points. The device's measurement performance conforms to international professional standards such as ISO 16331-1, ensuring the consistency and traceability of output data under varying ambient temperatures, target reflective surface materials, and measurement angle conditions. In terms of physical protection, the body is designed with an IP65-rated dustproof and waterproof sealed structure, effectively resisting rainwater splashing and brief immersion. It also features 2-meter drop resistance. The housing is wrapped in non-slip rubber and undergoes special anti-stain and anti-corrosion treatment, meeting the all-weather operational requirements of various harsh law enforcement scenarios, from rainy outdoor scenes to ash-covered fire residue environments. The display system is equipped with a large, four-line backlit LCD screen with an automatic light-sensing adjustment function, maintaining clear data readability under nighttime outdoor or direct strong light conditions. A combined shortcut key design (e.g., simultaneously pressing the plus and minus keys to switch to a 0.1mm high-precision mode) makes professional operation more convenient and efficient.

Core Functions and Compliance Operational Value

±1.0mm High Precision and 80m Omnidirectional Intelligent Spatial Solution, Providing a Precise Data Foundation for Standardized Proportional Sketching of Crime Scenes
The device features a typical measurement accuracy of ±1.0mm and a maximum range of 80 meters, with 360° omnidirectional measurement capability. Integrated one-touch calculation functions include intelligent horizontal distance measurement, indirect measurement without reflector points, automatic angle compensation, as well as area, volume, Pythagorean theorem, stakeout, and room angle calculations. A single operator can, within minutes, complete the precise acquisition of all spatial elements of a standard indoor scene, including wall lengths, door and window opening dimensions, furniture position coordinates, bloodstain distribution ranges, and estimated ballistic trajectory heights. This omnidirectional high-precision spatial data acquisition capability fundamentally upgrades the scene investigator's operation from the crude mode of relying on manual tape-measure pulling to digital single-soldier surveying—the measurement data can be directly input into scene sketching software to generate standardized proportional maps, or serve as foundational data for 3D scene reconstruction. It fully complies with the statutory requirements stipulated in the Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs that scene diagrams must be drawn to scale and marked with precise dimensions, providing a data foundation that withstands technical verification for judicial review of the objectivity of scene investigation records.

Built-in Multi-Program Intelligent Calculation Terminal, Simplifying Complex Spatial Measurements into an Efficient Single-Soldier Handheld Instant-Measurement Workflow
The device features built-in multiple measurement programs, including distance, minimum/maximum value, area, volume, Pythagorean theorem, stakeout, angle, and indirect measurement, automating the complex spatial parameter calculations that traditionally require multi-person cooperation and manual computation. In fire scene investigations, the operator measures the distances to each boundary point of the fire-affected area, and the device automatically calculates and displays the total burned area and perimeter. In special police tactical reconnaissance, by measuring the vertical distance from a window to the ground and the horizontal distance from the window to an adjacent wall, the device can automatically deduce the spatial relationship between the entry point and indoor obstacles. This intelligent built-in calculation terminal integrates, in a handheld device form factor, the full functionality of a traditional surveying team (tape measure, calculator, recording board, drawing tools), providing unified technical support from the equipment level for the rapid response and standardized operation of on-site law enforcement work.

IP65 Dustproof and Waterproof Rating and 2m Drop Resistance Protection, Meeting Full-Scene All-Weather Law Enforcement Needs from Indoor to Outdoor, from Clear to Rainy Conditions
The body is designed with an IP65-rated dustproof and waterproof seal, resistant to rainwater splashing and brief immersion. The 2-meter drop resistance ensures equipment integrity in case of accidental falls in complex environments. The housing is wrapped in non-slip rubber and undergoes special anti-stain and anti-corrosion treatment, allowing for normal use and cleaning maintenance under harsh conditions such as ash-covered fire scenes, muddy ground in rainy weather, and oily environments. This full-scene protection capability enables the device to adapt to a wide variety of challenging law enforcement settings—from standardized indoor investigations to field body disposal sites, from city streets to mountain search and rescue—comprehensively ensuring the continuity and planned nature of on-site spatial data acquisition work from the perspective of equipment durability and reliability.

User-Friendly Large-Screen Display and Intelligent Interactive Design, Ensuring Clear and Convenient Data Interpretation Under All-Weather Conditions
The device is equipped with a large, four-line backlit LCD screen with clear hierarchical separation of primary and secondary information and large data fonts. It features an automatic light-sensing adjustment function, maintaining clear data readability under low-light conditions at night or direct strong sunlight at midday. Combined shortcut keys support one-touch switching to professional functions such as the 0.1mm high-precision mode. The operational logic is straightforward, allowing law enforcement officers to achieve proficiency after minimal training. This user-friendly interactive design prevents operator visual fatigue and operational errors during prolonged, high-intensity on-site investigation work, ensuring the accurate recording and rapid interpretation of each set of measurement data.

Compliant Application Scenarios

Standardized Spatial Surveying and Precise Scene Diagram Sketching at Crime Scenes
During the on-site investigation of criminal cases such as homicide, burglary, and arson, investigators use this distance meter to perform precise point-by-point measurement of all spatial elements at the central scene and surrounding associated areas. This includes overall room dimensions, the positions and opening sizes of doors and windows, the positional coordinates of furniture and objects, the distances between the start and end points of blood spatter, and the heights and distances of wall and floor intersection points along potential ballistic trajectories. The measurement data, after being recorded on site, is accurately marked on a standardized scene diagram drawn to scale. As a core technical attachment to the case investigation file, the precision of the plotted data fully complies with the statutory standards for scene diagram drawing and dimensioning as stipulated in the Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs.

Rapid Spatial Intelligence Collection in Special Police Counter-Terrorism Tactical Reconnaissance and Operational Planning
Before counter-terrorism assaults, hostage rescues, or high-risk suspect arrest operations, special police reconnaissance teams use this distance meter to perform rapid, precise measurements of the exterior wall dimensions of the target building, the width and height above ground of door and window openings, the length and width of interior corridors, the internal layout of rooms, and the positions of various obstacles. The measurement data provides precise spatial intelligence support for planning the assault route, selecting the appropriate door and window breaching equipment, positioning sniper posts, and assessing safe distances for indoor tactical movements. This ensures that the formulation of the operational plan is grounded in objective, quantitative spatial data, significantly enhancing the precision and success rate of special tactical operations.

Quantitative Assessment Scenario of Burned Area and Structural Damage Extent at Fire and Explosion Incident Scenes
In fire or explosion investigations, investigators use this distance meter to measure and automatically calculate the area of key spatial parameters one by one, such as the boundary dimensions of the fire-affected area, the coverage extent of collapsed structures, the throw distance of debris, and the height of smoke staining on adjacent building exterior walls. The quantified spatial data provides precise physical evidence-based spatial correlation for determining the point of origin, analyzing the direction of fire spread, assessing the power of the explosion, and reconstructing the sequence of events. This provides measurement data support that can withstand scientific verification for the fire investigation report and any potential subsequent criminal prosecution.

General Police Auxiliary Measurement and Correctional Facility Security Sweep Scenario
During routine patrols by public security organs, security site surveys for major events, and perimeter security inspections of correctional facilities, officers use this distance meter to quickly measure various spatial parameters—such as the width and length of security screening passages, the area of temporary isolation zones, the height of prison walls, and the distance of patrol routes—providing immediate spatial data reference for duty deployment and security management. This replaces the inefficient traditional practices of visual estimation or manual tape-measure pulling.

Core Technical Parameters

In terms of ranging performance, the device has a maximum range of 80 meters and a typical measurement accuracy of ±1.0mm, supporting 360° omnidirectional measurement. Built-in measurement functions cover distance measurement, automatic minimum/maximum value tracking, area calculation, volume calculation, Pythagorean theorem indirect height measurement, stakeout positioning, angle measurement, indirect measurement, and intelligent horizontal distance measurement. Measurement performance conforms to international professional standards such as ISO 16331-1, ensuring data consistency and authoritativeness. For environmental protection, the body features an IP65-rated dustproof and waterproof rating, effectively resisting rainwater splashing and brief immersion, and has 2-meter drop resistance. The housing is wrapped in non-slip rubber and undergoes special anti-stain and anti-corrosion treatment. For display and operation, it is equipped with a large, four-line backlit LCD screen supporting an automatic light-sensing adjustment function, and features multi-function combination shortcut keys supporting one-touch switching to a 0.1mm high-precision mode. Power is supplied by a high-capacity rechargeable lithium battery or AA batteries. The standard configuration includes one Multi-Function Laser Distance Meter main unit, one set of high-capacity rechargeable lithium batteries or AA batteries, one portable soft protective bag, one wrist strap, and one set of product manual, calibration card, and certificate of conformity.

Compliant Field Application Cases

A robbery-related homicide occurred in a city, with the primary scene being a three-bedroom, two-living-room apartment featuring a complex layout and scattered furniture. Criminal technical personnel used this Multi-Function Laser Distance Meter to conduct a systematic spatial survey of the entire apartment. Within minutes, they collected all wall lengths for the living room, bedrooms, and corridor; the positions and dimensions of doors and windows; the positional coordinates of sofas and beds; and the precise distances from the origin points of blood spatter at the primary scene to the walls in all directions. Using the built-in automatic area calculation function, the technicians quickly determined the total area of the primary scene and the area of each functional zone. All the spatial data was subsequently collated, accurately marked on a standardized scene floor plan drawn to scale, and transferred with the case file to the procuratorate for prosecution review. During the court cross-examination stage, the defense challenged the accuracy of some of the dimensional annotations on the scene diagram. The expert witness presented the factory calibration certificate of this distance meter and the original on-site measurement data records in court, proving that all annotated dimensions were obtained through high-precision laser measurement. The court admitted this evidence.

Before handling a hostage-taking incident, the assault team of a special police detachment used this distance meter to conduct rapid, covert measurements of key spatial parameters of the target building, including the dimensions of the exterior wall openings, the depth of the corridors, and the positions of interior columns. The reconnaissance personnel immediately transmitted the measurement data back to the rear command vehicle. Based on the precise spatial data, the operation commander formulated an operation plan involving a multi-point synchronized breach, precisely calculating the breaching timing for each assault group and their interior tactical movement paths. The assault operation was executed smoothly as planned, and the hostage was rescued safely. The post-operation review concluded that the precise spatial intelligence provided by the laser distance meter was one of the key factors contributing to the success of this operation. The detachment subsequently incorporated this equipment into the standard gear for special police assault reconnaissance.

Manufacturer Information: Beijing Best United Technology Co., Ltd.
Website: https://www.bestlh.com
Address: Building C9, Jianziban, No.1 Courtyard, Jinghai Sixth Road, Yizhuang Development Zone, Beijing
Tel: 010-56526048