STT402L Plus 2" Electronic Theodolite
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STT402L Plus 2" Electronic Theodolite

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  • Uses both Li-Ion rechargeable and AA battery
  • All purpose instrument, suitable for any kind of field work
  • Ergonomic keypad and backlighed LCD display
  • Easy to use, most of the functions with one key
  • IP 55 water & dust protection
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The accuracy of angle measuring is 2". The STT2 Plus can show horizontal and vertical angle at the same time, and can transfer slope of vertical angle and compensate tilt of vertical angle. This theodolite is very versatile: it can be wild used in field of third and fourth grade triangle control survey of country and city, project convey of railway, road, bridge, water conservancy, mineral mountain and much more.

STT402L offers the opportunity to challenge high-precision monitoring and engineering works. Thanks to its absolute encoder, angle measurements are saved when STT402L is switched off. Low power consumption gives more than 80 hours working time. Unlike other instruments that use only AA battery, STT402L offers the options to use the Li-Ion rechargeable battery or standard AA battery. The dual axis compensator with 1” accuracy ensures reliable measurements on every kind of terrain.

In addition, the large ergonomic keypad and the backlit LCD display allows the Surveyor to be extremely productive in the field works. Also the reticle is illuminated permitting to work inside tunnels and buildings. By pressing one key STT402L converts vertical angles to percent of grade, locks the horizontal angle, resets the horizontal angle to zero offering the possibility to reposition or repeat a measurement.

The continuously reading program with average calculations gives a 100% error free reading on both the circles. Stonex STT402L comes with a complete set of accessories including the carrying case, battery and charger, adjusting tools.


  • AA 4.8V 160mAh battery for STT2 Plus
  • SW-04505 Charger
  • Data cable
  • Carrying Case


Returns Policy

We strive to ensure your satisfaction with every purchase from our store. If you are not completely satisfied with your purchase, you may return most new, unopened items within 30 days of delivery for a full refund. If the return is a result of our error, such as receiving an incorrect or defective item, we will also cover the return shipping costs.

To initiate a return, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu, and click the Return Item(s) button. We will notify you via e-mail of your refund once we have received and processed the returned item.

Please allow up to four weeks for your refund to be processed. This includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days). However, in many cases, you may receive your refund more quickly.


We are proud to offer shipping to virtually any address in the world, with some restrictions on certain products and international destinations. When you place an order, we will provide shipping and delivery date estimates based on the availability of your items and the shipping options you choose. Please note that shipping rates for our items are weight-based, and the weight of each item can be found on its detail page. To comply with the policies of the shipping companies we work with, all weights will be rounded up to the next full pound.

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