| Technical Data | AT28 |
| Telescope | Erect |
| Magnification | 28 X |
| Clear objective aperture | 34mm |
| Field of view | 1°30 |
| Shortest focusing distance | 0.4m |
| Multiplication factor | 100 |
| Additive factor | 0 |
| Compensator | |
| Working Range | ±15” |
| Setting accuracy | ±0.4” |
| Sensitivity of bubble | 8’/2mm |
| Circle graduation | 1° or 1gon |
| Standard deviation for 1km double-run leveling | 1.5mm |
| Instrument N/W | 1.34kg |
| Center size of tripod | M 16 or 5/8” |
Malaysia
