| Technical parameter | SJDJ-J02/J05 | SJDJ-X02/X05 |
| TELESCOPE | Image | Erect | Erect |
| Magnification | 30× | 30× |
| Clear Objective aperture | φ45mm | φ45mm |
| Angle of field of view | 1°30′ | 1°30′ |
| Shortest stadia | 1.35m | 1.35m |
| Stadia multiplying constant | 100 | 100 |
| Stadia additive constant | 0 | 0 |
| Resolving power | 3″ | 3″ |
SYSTEM
ANGLE
MEASURING
| Method of measuring angle | Absolute type encoder | Incremental encoder of photoelectricity |
| Minimum reading | 1″or 5″ |
| Method of detecting | H:Two side V:One side |
| Accuracy of measuring angle | 2″/5″ |
| Angle unit | DEG 、 GON |
| Display | two faced LCD |
| Sensor | Tilt sensor | Automatic vertical compensation |
| Range of compensation | ±3′ |
| Laser plummet | Laser power | ＜1mW, normal laser plummet |
| Facular diameter | ≤2mm , normal laser plummet |
| Alignment accuracy | 1.5mm(1.5m height of theodolite center), normal laser plummet |
| Bubble | Accuracy of plate bubble | 30″/2mm |
| Accuracy of circular bubble | 8′/2mm |
| Collimation laser | Wavelength | 635nm |
| Power | ≤1mW(in front of lens) IEC class 2 |
| Largest measuring distance | 200m |
| Central facular diameter | 5mm/200m |
| Non-coaxial error between laser axis and collimation axis | ≤10 |
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