| Specs/Model | LS-25 | S-25 | S-27 | S-28 |
| Telescope | reversible, erect,12 x |
O | O | o(not reversible) |
| Telescope level | 5‘/2mm | – | – | – |
| Horizontal circle | 5‘.”O-BAC” zero setting |
O | – | – |
| Compass circle | Dia=70mm, 1° | O | O | O |
| Vertical circle | full circle, 1° | O | O | semi-circle, 1° |
| Weight(with case) | 1.1kg(1.3kg) | 1.0kg(1.2kg) | 0.9kg(1.1kg) | 0.9kg(1.1kg) |
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