Single Sided Rail Clip with optical survey L-bar Prism

Single Sided Rail Clip Assembly with optical survey L-bar Prism for use with Topcon, Sokkia, Leica, Trimble and other total stations


Availability: 672 in stock

Product Information

  We carry stock of this item and same-day shipping or pickup is available!

The rail clip assembly is designed for easy attachment of monitoring prisms, mounted directly with 1/4″ – 20 hardware (supplied).

The rail consists of a custom formed steel clip with stainless steel socket cap screws. The rail clip fits on to common 6″ rail.

The track clip is fasted to the rail with 1/4″ – 20 SS screws to provide positive connection to the rail. Rail clips features are listed below:


  • 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%


  • Material: 316 SS
  • Rail mounting Bolt: 316SS Hex head 3/8” x 5” 
  • L-Bar mounting screw: SS Hex socket 5/16”
  • Rail Clip Length Range: 5 ¾”  to 7 ½” 

Automated Total Station Survey Prism Comparison Video


Rail Clip L-Bar Monitoring Prism Assembly Datasheet
Prisms for Total Stations Comparison Brochure

User Manual