Type: SDJ-02, SDJ-05, SDJ-10/20
Image: Erect
Field of vies: 1°30
Magnification: 30X
Clear objective aperture: 45mm
Shortest focusing distance: 1.35m
Resolving power: 3
Minimum reading: 1/5
Range of compensator: ±3
Accuracy of circular bubble: 8/2mm
Accuracy of plate bubble:30/2mm
Voltage: 6V
Battery life: 15h