Description
The GeoMax ZPR100 Circular Surveying Prism is used in Surveying as a Target Reflector for measuring long distances in the field. It consists of a corner cube reflector, inside a red plastic holder. Commonly used with the GeoMax ZTP100 target plate for precise aiming over long distances.
A direct equivalent to the ZRP100 is the Leica GPR113 Surveying Prism.
Specifications
| Model: | ZPR100 |
| Manufacturer: | GeoMax |
| MPN: | 765608 |
| Height Offset: | 86.0 mm |
| Absolute constant: | -34.40 mm |
| Leica constant: | +0.00 mm |
| Centring accuracy: | ±2.0 mm |
| Mount: | 12mm (Leica) Spigot |
Notes:
Below is a table with approximate prism ranges, based on atmospheric conditions.
| ↓ Surveying Prism | Poor | Good | Best |
| → ZPR100 Standard Prism | 1800m | 3000m | 3700m |
| 3x ZPR100 Prisms | 2300m | 4500m | 5400m |
| ZRP1 & GRZ122 360° Prisms | 800m | 1500m | 2100m |
| Leica GRZ101 360° Mini Prisms | 500m | 800m | 1000m |
| ZMP100 & ZMP101 Mini Prisms | 800m | 1200m | 2100m |
| ZTM100 Reflective Tape | 200m | 200m | 200m |
Atmospheric conditions are defined as:
- Poor – Strong haze & 5km visibility or strong sunlight with severe heat shimmer
- Good – Light haze & visibility about 20 km or moderate sunlight with slight heat shimmer
- Best – Overcast, no haze, visibility about 40 km & no heat shimmer.
GeoMax ZRP100 FAQ
Below is a list of frequently asked questions about GeoMax ZRP100.
What is the prism constant for the GeoMax ZRP100?
The absolute prism constant for the GeoMax ZRP100 is -34.4mm. The Leica constant is 0.0mm.
Can I use the GeoMax ZRP100 with a Leica instrument?
Yes, just set the prism constant to 0.0mm.
What is the height offset of the GeoMax ZRP100?
The height offset is 86.0mm.
