Description
The Trimble Mini Prism Kit – nodal 25.4 mm prism in frame is a mini prism made by Trimble (part number 187311).
Its absolute prism constant is -17.0 mm, which is +17.4 mm on the Leica scale.
Specifications
| Model: | Mini Prism Kit (Trimble Mini prism) |
| Manufacturer: | Trimble |
| MPN: | 187311 |
| Status: | Current |
| Absolute constant: | -17.00 mm |
| Leica constant: | +17.40 mm |
| Constant source: | Manufacturer documentation |
| Prism diameter: | 25.4 mm |
| Centring accuracy: | ±0.3 mm |
| Range: | 1500 with DR Plus EDM (standard clear atmosphere) |
| Mount: | 5/8" Thread |
| Coating: | Silver back, AR-coated front |
| Housing: | Aluminium frame (dealer) |
| Last verified: | 21/10/2026 |
Notes:
- Height offset: Modular: 100 (50 mm point), 135 (5/8 adapter), 200 (mini pole), 400-1300 (sectional pole)
Sources
Trimble Mini Prism Kit - nodal 25.4 mm prism in frame FAQ
Below is a list of frequently asked questions about Trimble Mini Prism Kit - nodal 25.4 mm prism in frame.
What is the prism constant for the Trimble Mini Prism Kit - nodal 25.4 mm prism in frame?
The absolute prism constant for the Trimble Mini Prism Kit - nodal 25.4 mm prism in frame is -17.0mm. The Leica constant is 17.4mm.
Can I use the Trimble Mini Prism Kit - nodal 25.4 mm prism in frame with a Leica instrument?
Yes, just set the prism constant to 17.4mm.
