Description
The South TPS21 single prism system is a survey prism made by South (part number TPS21).
Its absolute prism constant is 0.0 mm, which is +34.4 mm on the Leica scale.
Specifications
| Model: | TPS21 |
| Manufacturer: | South |
| MPN: | TPS21 |
| Absolute constant: | +0.00 mm |
| Leica constant: | +34.40 mm |
| Constant source: | Dealer listing |
| Prism diameter: | 65 mm |
| Last verified: | 21/10/2026 |
Notes:
- The prism constant comes from a dealer listing and has not been confirmed in manufacturer documentation. Check the label on the prism before relying on it.
Sources
South TPS21 single prism system FAQ
Below is a list of frequently asked questions about South TPS21 single prism system.
What is the prism constant for the South TPS21 single prism system?
The absolute prism constant for the South TPS21 single prism system is 0.0mm. The Leica constant is 34.4mm.
Can I use the South TPS21 single prism system with a Leica instrument?
Yes, just set the prism constant to 34.4mm.
