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/ Most common commercially available prisms and their constants.csv
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October 3, 2025 10:20
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| Prism Name | Leica constant (Kl) | Non-Leica (Trimble/Topcon etc) constant (K) | |
|---|---|---|---|
| Leica 360° Mini GRZ101 | +30.0mm | -4.4mm | |
| Leica 360° Prism – GRZ4/GRZ121/GRZ122 | +23.1mm | -11.3mm | |
| Leica Mini GMP111 | +17.5mm | -16.9mm | |
| Leica Standard Prism GPH1/GPR121/GPR111 | 0mm | -34.4mm | |
| Prism from Nikon/Topcon/Spectra Precision | +34.4mm | 0mm | |
| Prisms from Sokkia/Pentax/Topcon | +4.4mm | -30.0mm | |
| Reflecting Foil / Reflective Flat Targets | +34.4mm | 0mm | |
| Trimble 360 Prism | +36.4mm | +2.0mm | |
| Trimble Active Track 360 Target | +56.4mm | +22.0mm |