|
GW-X2 |
GW-X3 |
GW-X4 |
|
|
Parameter |
|
|
|
|
Standard deviation of two runs per kilometer |
1.5 mm |
1.5 mm |
1.5 mm |
|
Telescope imaging |
Erect image |
|
|
|
Magnification |
32x |
32x |
32x |
|
Clear objective aperture |
36 mm |
36 mm |
36 mm |
|
Field of view |
1¡ã20¡ä |
||
|
Shortest focal distance |
0.4 m |
||
|
Stadia multiplication constant |
100 |
||
|
Stadia addition constant |
0 |
||
|
Circular bubble accuracy |
8 ft/2 mm |
||
|
Dial division unit |
1¡ã or 1 gon |
||
|
Working range of equipment |
¡À15¡ã |
||
|
Setting accuracy |
¡À0.3 " |
¡À0.3 " |
¡À0.3 " |
|
Threaded connection to tripod |
M16 or 5/8 " |
M16 or 5/8 " |
M16 or 5/8 " |
|
Waterproof |
IP4 |
||
