Description
The Topcon L-Bar Mini Prism with hood (monitoring) is a monitoring prism made by Topcon (part number 1042647-01).
Its absolute prism constant is -25.0 mm, which is +9.4 mm on the Leica scale.
Specifications
| Model: | L-Bar Mini Prism with Hood |
| Manufacturer: | Topcon |
| MPN: | 1042647-01 |
| Status: | Current |
| Absolute constant: | -25.00 mm |
| Leica constant: | +9.40 mm |
| Constant source: | Manufacturer documentation |
| Dimensions (W × H × D): | 90.5×90×43.2 mm |
| Weight: | 220 g |
| Maximum range: | 1,200 m (Up to 800-1200 m; minimum 1.5 m) |
| Mount: | M8 adapter thread |
| Coating: | Silver |
| Last verified: | 21/10/2026 |
Sources
Topcon L-Bar Mini Prism with hood (monitoring) FAQ
Below is a list of frequently asked questions about Topcon L-Bar Mini Prism with hood (monitoring).
What is the prism constant for the Topcon L-Bar Mini Prism with hood (monitoring)?
The absolute prism constant for the Topcon L-Bar Mini Prism with hood (monitoring) is -25.0mm. The Leica constant is 9.4mm.
Can I use the Topcon L-Bar Mini Prism with hood (monitoring) with a Leica instrument?
Yes, just set the prism constant to 9.4mm.
