Description
The Goecke Leica GMP104-compatible L-bar monitoring prism is made by Goecke (part number 46-LMP (clamp adapter 46-KA-LMP)).
Its absolute prism constant is -25.4 mm, which is +9.0 mm on the Leica scale.
Specifications
| Model: | 46-LMP |
| Manufacturer: | Goecke |
| MPN: | 46-LMP (clamp adapter 46-KA-LMP) |
| Status: | Current |
| Absolute constant: | -25.40 mm |
| Leica constant: | +9.00 mm |
| Constant source: | Manufacturer documentation |
| Mount: | Screw Holes |
| Coating: | Copper coated |
| Housing: | Anodized aluminium |
| Equivalents: | Leica GMP104 |
| Last verified: | 21/10/2026 |
Sources
Goecke Leica GMP104-compatible L-bar monitoring prism FAQ
Below is a list of frequently asked questions about Goecke Leica GMP104-compatible L-bar monitoring prism.
What is the prism constant for the Goecke Leica GMP104-compatible L-bar monitoring prism?
The absolute prism constant for the Goecke Leica GMP104-compatible L-bar monitoring prism is -25.4mm. The Leica constant is 9.0mm.
Can I use the Goecke Leica GMP104-compatible L-bar monitoring prism with a Leica instrument?
Yes, just set the prism constant to 9.0mm.
