Description
The Goecke tilting holder with 25 mm mini prism (Leica-compatible) is a mini prism made by Goecke (part number 46-MP, 46-MP-ZK (with clamp)).
Its absolute prism constant is -16.9 mm, which is +17.5 mm on the Leica scale.
Specifications
| Model: | 46-MP |
| Manufacturer: | Goecke |
| MPN: | 46-MP, 46-MP-ZK (with clamp) |
| Status: | Current |
| Height Offset: | 86.0 mm |
| Absolute constant: | -16.90 mm |
| Leica constant: | +17.50 mm |
| Constant source: | Manufacturer documentation |
| Prism diameter: | 25 mm |
| Range: | approx. 500 |
| Mount: | 12mm (Leica) Spigot |
| Coating: | Silver back coating |
| Housing: | Break-proof plastic |
| Equivalents: | Leica GMP101/GMP111 style (Leica +17.5) |
| Last verified: | 21/10/2026 |
Sources
Goecke tilting holder with 25 mm mini prism (Leica-compatible) FAQ
Below is a list of frequently asked questions about Goecke tilting holder with 25 mm mini prism (Leica-compatible).
What is the prism constant for the Goecke tilting holder with 25 mm mini prism (Leica-compatible)?
The absolute prism constant for the Goecke tilting holder with 25 mm mini prism (Leica-compatible) is -16.9mm. The Leica constant is 17.5mm.
Can I use the Goecke tilting holder with 25 mm mini prism (Leica-compatible) with a Leica instrument?
Yes, just set the prism constant to 17.5mm.
What is the height offset of the Goecke tilting holder with 25 mm mini prism (Leica-compatible)?
The height offset is 86.0mm.
