|
B20 |
|
Telescope |
||
Length |
215mm (8.46in.) |
|
Magnification |
32x |
|
Objective aperture |
42mm (1.65in.) |
|
Resolving power |
3" |
|
Field of View |
1°20' |
|
Minimum focus |
0.2m (7.9in.) from end of telescope |
|
Image |
Erect |
|
Reticle pattern |
Wedge |
|
Stadia constant |
0 |
|
Stadia ratio |
100 |
|
Focusing knob |
2-speed |
|
Sighting aid |
Peep sight |
|
Lens hood |
Retractable |
|
Accuracy (standard deviation for 1km double run leveling) |
||
Without micrometer |
0.7mm |
|
With micrometer |
0.5mm |
|
Compensator |
||
Type |
Pendulum compensator with magnetic damping system |
|
Setting accuracy |
0.3" |
|
Working range |
±15' |
|
Circular level |
||
Sensitivity |
10' / 2mm |
|
Mirror |
Pentaprism |
|
Horizontal circle |
||
Diameter |
103mm (4.1 in.) |
|
Graduations |
1° / 1gon |
|
General |
||
Horizontal motion drive |
Clampless, endless, double-sided knobs |
|
Water resistance |
IPX6 (EC 60529:2001) |
|
Operating temperature |
-20 to +50°C (-4 to +122°F) |
|
Width |
130mm (5.12in.) |
|
Length |
215mm (8.46in.) |
|
Height |
140mm (5.51in.) |
|
Weight |
1.85kg (4.1 lb.) |