Overview for Topcon 1034419-08 DT-309 Digital Theodolite
The Topcon DT-309 Digital Theodolite is a highly-precise instrument for alignment and angular measurements. It features the industry-trusted technology found on the venerable DT-200 line but in a light and compact package with superior performance and calculations out in the field.
Unparalleled Accuracy and Precision The DT-309 is capable of exceptionally fine angle measurements. The instrument has a 2.5-inch telescopic resolving power and yields angular values accurate to within 5 seconds. An optical plummet allows for simplified setups over a control point, while the tilt sensor provides compensation of ±3 minutes.
Excellent Usability and Features The DT-309 has a streamlined interface and other design features that make it a highly usable             instrument. It has built-in illumination for its reticle and carries dual backlit LCDs for clear viewing of results. The device is powered using Li-Ion or external Alkaline AAs, which provide up to 140 hours of operating time. Additionally, the DT-309 handles a broad range of field environments with dust proofing and water-resistance to IP66 specifications. 

The Topcon DT-309 Digital Theodolite brings the best in accurate and precise angle measurements to any surveying operation.
Download topcon DT-300 brochure.
Highlights
    
    
      Angular accuracy of 9-secs 
      Magnification up to 30x 
      Up to 250 hours battery life 
      Precision Laser Pointer Guidance 
      Compact and lightweight build