Description
The Topcon Strobe Prism Assembly (62 mm) – 0 mm position is a active target made by Topcon and also sold under the Sokkia brand (part number 724100 (5½ x 7 in. target), 724101 (6 x 9 in. target)).
Its absolute prism constant is 0.0 mm, which is +34.4 mm on the Leica scale.
Specifications
| Model: | Strobe Prism Assembly |
| Manufacturer: | Topcon |
| MPN: | 724100 (5½ x 7 in. target), 724101 (6 x 9 in. target) |
| Status: | Current |
| Absolute constant: | +0.00 mm |
| Leica constant: | +34.40 mm |
| Constant source: | Manufacturer documentation |
| Prism diameter: | 62 mm |
| Mount: | Tilting mount with target |
| Housing: | Canister housing strobe electronics |
| Last verified: | 21/10/2026 |
Sources
Topcon Strobe Prism Assembly (62 mm) - 0 mm position FAQ
Below is a list of frequently asked questions about Topcon Strobe Prism Assembly (62 mm) - 0 mm position.
What is the prism constant for the Topcon Strobe Prism Assembly (62 mm) - 0 mm position?
The absolute prism constant for the Topcon Strobe Prism Assembly (62 mm) - 0 mm position is 0.0mm. The Leica constant is 34.4mm.
Can I use the Topcon Strobe Prism Assembly (62 mm) - 0 mm position with a Leica instrument?
Yes, just set the prism constant to 34.4mm.
