产品名称：DT-2型光学经纬仪
Product Name: DT-2 Optical Theodolite
【产品概述】
DT-2型光学经纬仪是一款专为工程测量与基础测绘设计的实用型光学仪器，采用简约设计理念和成熟制造工艺，在保障基础测量精度的同时，显著优化了产品性价比。该设备适用于建筑放样、地形勘测、教学演示等多场景需求，以轻量化机身和便捷操作系统为特色，满足使用者对基础测量工具的功能期待。
【产品特点】
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精密光学系统
搭载多层镀膜物镜组，成像清晰锐利，配合高对比度分划板，确保角度读数辨识度。水平度盘与竖直度盘采用对径符合读数系统，支持1 级显示精度，满足常规工程测量需求。
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稳定机械结构
全金属基座内置三向调平机构，配合阻尼适中的水平微动螺旋，可在户外环境下快速完成整平操作。封闭式轴系设计有效防止灰尘侵入，关键传动部件采用耐磨合金材质，延长设备使用寿命。
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人性化设计
2.5倍率广角目镜有效扩展观测视野，可拆卸式提把与标准化三脚架接口提升设备便携性。标配激光对点器辅助快速定位，昼夜环境均能保持良好可视性。
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多场景适配
28mm通光孔径物镜在常规光照条件下表现稳定，内置磁阻尼装置有效抑制仪器晃动，特别适合土木工程现场、农业土地整理及职业院校教学等应用场景。
【应用领域】
• 建筑工程基线定位 • 水利工程高程控制 • 市政道路施工放样 • 地理信息数据采集 • 工程测量教学实践
Product Description:
The DT-2 Optical Theodolite is an entry-level surveying instrument featuring a lightweight aluminum alloy body weighing 4.2kg. Its 40mm objective lens with anti-reflective coating ensures clear imaging even in moderate lighting conditions. The horizontal circle and vertical circle both provide 1-minute graduation accuracy through direct reading system.
Notable operational features include a two-speed tangent motion mechanism for precise targeting adjustment and a built-in optical plummet with ±3mm accuracy range. The instrument maintains stable performance within temperature range of -10℃ to +45℃, with IP54 dust/water resistance protecting internal components.
Practical design elements encompass a foldable carrying handle, universal tripod interface compatible with most 5/8" threaded mounts, and color-coded leveling screws for intuitive operation. The package includes a protective transport case, lens cleaning kit and user manual with trigonometric calculation reference tables.
Ideal for construction layout, preliminary land surveying and technical education, this cost-effective solution balances essential functionality with simplified maintenance requirements, making it particularly suitable for small contractors and vocational training institutions.
