Optical Survey Prism with L-bar mount

Optical Survey Prism with L-bar mount for use with Topcon, Sokkia, Leica, Trimble and other total stations


Availability: 384 in stock

Product Information

Specto Technology is your one source for AMTS Survey Prisms and is proud to provide you with:

  • L-Bar Monitoring Prism sales and support
  • Customized training for you and/or your subcontractors. Click here to view a list of training classes.
  • Best-in-class hosted data solutions to keep your data moving wirelessly from the field to your fingertips
  • Exceptional customer service and support

The L-bar prism is mounted in a hermetically sealed metal holder. The L- bracket has 1 hole for ease in mounting. The prism offset is dependent on the mounting position. The prism is ground to 2 arc seconds which affords you to obtain maximum distance 2000m (7000ft) under normal conditions. The “L-Bar” and prism housing is constructed of anodized aircraft-grade aluminum

  We carry stock of L-Bar Monitoring Prisms. Same-day shipping or pickup is available!

Product Features:

  • 25.4mm diameter prism, 19.8mm height
  • Accuracy: 5 arc seconds
  • L-bracket has 8mm hex bolt to adjust angle & a 10mm hole for mounting
  • Absolute Offset/Constant (Topcon & others): -25.4
  • Prism Offset/Constant (Leica): +8.92mm 
  • Range 1000m (3000ft) 
  • Prism surface finish: 60-40
  • Reflectivity: 95%
  • Aluminum
  • Offset is dependent on mounting position
  • Range 2000m (7000ft)
  • 25.4mm


“L-Bar” Monitoring Prism Assembly – Datasheet
Prisms for Total Stations Comparison Brochure