|
Model Parameter |
ATO-24 |
ATO-28 |
ATO-32 |
|
Standard Deviation for 1km Double-run levelling |
2.5mm |
2mm |
1.5mm |
|
Telescope image |
Erect |
Erect |
Erect |
|
Magnification |
24x |
28x |
32x |
|
Clear Objective Aperture |
30mm |
30mm |
40mm |
|
Angle of field of View |
1°20′ |
1°20′ |
1°20′ |
|
Shortest Focusing Distance |
0.6m |
0.6m |
0.6m |
|
Stadia Multiplying Constant |
100 |
100 |
100 |
|
Stadia Additive Constant |
0 |
0 |
0 |
|
Sensitivity of Circular Level |
8′/2mm |
8′/2mm |
8′/2mm |
|
Graduation interval of Circle |
1°or 1gon |
1°or 1gon |
1°or 1gon |
|
Compensator type |
V-shaped wire suspension magnetic-damping |
|
Compensator working Range |
±15′ |
±15′ |
±15′ |
|
Setting Accuracy |
±0.5″ |
±0.3″ |
±0.3″ |
|
Connecting size to tripod |
M16 or 5/8″ |
M16 or 5/8″ |
M16 or 5/8″ |
|
base plate type |
flat or domed |
flat or domed |
flat or domed |
