| Model No. | GP-12SG |
| Laser beam | 1C1V |
| Light sources | 520nm |
| Accuracy | ± 1mm/5m |
| Self-leveling range | ±3° |
| Working range | Dia. 30m ( with detector ) |
| Power supply | 4xAA batteries |
| Mounting thread | 1/4", ISO standard |
| Operating temperature | -10℃~+50℃ |
| Size | 102 x 90 x 60 mm |
| Weight | 0.45kg (including batteries) |