Key Features

• Professional 9-second angular accuracy for surveying and construction applications
• Integrated red Class II laser pointer for alignment and layout tasks
• Measures both horizontal and vertical angles with precision
• Advanced absolute encoder technology for reliable field calculations
• Rugged IP66-rated dustproof and waterproof construction
• Powerful 30x telescope magnification for long-distance targeting
• Single backlit LCD display for clear visibility in low-light conditions
• Optical plummet for accurate instrument setup over control points
• Long battery life up to 230–300 hours depending on power source
• Compact and lightweight design for easy transportation
• Supports AA batteries or optional rechargeable Li-Ion battery system
• Ideal for construction layout, engineering, excavation, and land surveying

Product Description

The Topcon DT-309L Digital Electronic Theodolite with Laser Pointer (1034419-09) is a rugged and precise surveying instrument designed for accurate angular measurements and alignment applications in construction and engineering projects. Equipped with an integrated red Class II laser pointer, the DT-309L provides clear visual alignment assistance, making layout and positioning tasks faster and more efficient on active job sites.

Built using Topcon’s advanced absolute encoder technology, the DT-309L delivers dependable 9-second measurement accuracy for both horizontal and vertical angles. Its IP66-rated weather-resistant housing protects against dust, rain, and harsh environmental conditions, ensuring reliable field performance in demanding outdoor applications.

The powerful 30x telescope allows sharp target acquisition at long distances, while the optical plummet enables quick and accurate setup over reference points. With long operating time, compact portability, and durable construction, the Topcon DT-309L is an ideal solution for surveyors, engineers, and construction professionals requiring precision and reliability in the field.

Specifications

• Model: DT-309L
• Part Number: 1034419-09
• Brand: Topcon
• Type: Digital Electronic Theodolite with Laser Pointer
• Angular Accuracy: 9 Seconds
• Laser Type: Red Class II Laser Pointer
• Laser Range: Up to 50m (165 ft) in daylight
• Telescope Magnification: 30x
• Objective Lens Diameter: 45mm
• Minimum Focus Distance: 1.0m
• Display: Single Backlit LCD
• Measurement Type: Horizontal & Vertical Angles
• Encoder System: Rotary Absolute Encoder
• Optical Plummet: 3x Magnification
• Protection Rating: IP66 Dustproof & Waterproof
• Power Supply: 4 AA Batteries or Optional BDC71 Li-Ion Battery
• Battery Life:
  • Theodolite Only: Up to 230–300 Hours
  • Laser Only: Up to 80–100 Hours
  • Combined Use: Up to 55–70 Hours
• Operating Temperature: -20°C to 50°C
• Weight: Approx. 4.0kg
• Application: Surveying, Construction, Engineering, Alignment

What’s Included

• Topcon DT-309L Digital Theodolite
• Integrated Laser Pointer
• Hard Carrying Case
• Plumb Bob
• Tool Kit
• Waterproof Protective Cover
• Lens Cleaning Cloth
• User Manual