Key Features

• Professional 9-second angular accuracy for surveying and construction applications
• Measures both horizontal and vertical angles with precision
• Advanced absolute encoder technology for stable and accurate readings
• Rugged IP66-rated dustproof and waterproof housing for harsh environments
• Powerful 30x telescope magnification for long-distance target visibility
• Dual backlit LCD display for clear viewing in low-light conditions
• Optical plummet for faster and more accurate setup
• Lightweight and compact design for easy portability
• Long battery life up to 230–300 hours depending on power source
• Supports AA batteries or rechargeable Li-Ion battery system
• Ideal for construction layout, alignment, excavation, and engineering work

Product Description

The Topcon DT-309 Digital Electronic Theodolite (1034419-08) is a reliable and durable surveying instrument engineered for accurate angle measurements in construction, engineering, and land surveying projects. Designed with Topcon’s advanced absolute encoder technology, the DT-309 delivers consistent 9-second measurement accuracy for professional field applications.

Built to withstand demanding job site conditions, the DT-309 features an IP66-rated dustproof and waterproof housing that provides dependable operation in rain, dust, and rugged outdoor environments. Its powerful 30x telescope and optical plummet allow precise target acquisition and fast instrument setup, improving workflow efficiency in the field.

The dual backlit LCD displays ensure easy viewing in various lighting conditions, while the lightweight compact body makes transportation and operation convenient for daily surveying tasks. Whether used for construction layout, site alignment, drainage work, or general surveying, the Topcon DT-309 offers the durability and precision trusted by professionals worldwide.

Specifications

• Model: DT-309
• Part Number: 1034419-08
• Brand: Topcon
• Type: Digital Electronic Theodolite
• Angular Accuracy: 9 Seconds
• Telescope Magnification: 30x
• Objective Lens Diameter: 45mm
• Minimum Focus Distance: 0.9m
• Display: Dual Backlit LCD
• Measurement Type: Horizontal & Vertical Angles
• Encoder System: Absolute Encoder
• Protection Rating: IP66 Dustproof & Waterproof
• Power Supply: 4 AA Batteries or Optional Li-Ion Battery
• Battery Life: Up to 230–300 Hours
• Operating Temperature: -20°C to 50°C
• Weight: Approx. 4.0–4.1kg
• Application: Surveying, Construction, Engineering, Alignment

What’s Included

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