SPECIFICATIONS AT-G SERIES
| SPECIFICATIONS |
AT-G1 |
AT-G2 |
AT-G3 |
AT-G4 |
AT-G7 |
| Telescope |
|
|
|
|
|
| Length (mm) |
229 |
229 |
230 |
192 |
204 |
| Image |
Erect |
Erect |
Erect |
Erect |
Erect |
| Magnification |
32x |
32x |
30x |
26x |
22x |
| Objective lens (mm) |
45 |
45 |
40 |
30 |
30 |
| Relative brightness |
1.98 |
1.98 |
1.78 |
1.33 |
1.86 |
| Field of view |
1°20' |
1°20' |
1°30' |
1°30' |
1°30' |
| Resolving power |
2.5" |
2.5" |
3.0" |
3.5" |
4.0" |
| Minimum focus (m) |
1.0 |
1.0 |
0.5 |
0.5 |
0.9 |
| Stadia ratio |
100 |
100 |
100 |
100 |
100 |
| Circular level |
|
|
|
|
|
| Sensitivity (/2mm) |
8' |
8' |
8' |
8' |
10' |
| Automatic levelling |
|
|
|
|
|
| Setting accuracy |
±0.3" |
±0.3" |
±0.3" |
±0.3" |
±0.5" |
| Compensating range |
±15' |
±15' |
±15' |
±15' |
±10' |
| Accuracy (1km double run
levelling) |
| Without optical micrometer (mm) |
±0.7 |
±0.7 |
±1.5 |
±2.0 |
±2.5 |
| With optical micrometer (mm) |
±0.4 |
±0.4 |
±1.0 |
- |
- |
| Horizontal circle |
|
|
|
|
|
| Diameter (mm) |
90 |
117 |
117 |
117 |
102 |
| Minimum division |
10'(0.1g) |
1°(1g) |
1°(1g) |
1°(1g) |
1°(1g) |
| Weight |
|
|
|
|
|
| Instrument (kg) |
2.1 |
1.8 |
1.8 |
1.6 |
1.2 |
| Plastic carrying case (kg) |
1.3 |
1.3 |
1.3 |
1.3 |
1.2 |
|
|