Alat Ukur Tanah Waterpass Topcon ATB 2
AT-B2
|
AT-B3
|
AT-B4
| ||
Telescope
| ||||
Length
|
215mm (8.46 in.)
| |||
Magnification
|
32X
|
28X
|
24X
| |
Objective Aperture
|
42mm (1.65 in.)
|
36mm (1.42 in.)
|
32mm (1.26 in.)
| |
Resolving Power
|
3″
|
3.5″
|
4″
| |
Field of View
(at 100m/328ft.) |
1°20′
(2.3m / 7.5ft.) |
1°25′
(2.5m / 8.2ft.) | ||
Minimum Focus
|
0.2m (7.9 in.) from end of telescope
0.3m (1ft.) from instrument center | |||
Image
|
Erect
| |||
Stadia Constant
|
0
| |||
Stadia Ratio
|
100
| |||
Accuracy (1km double run leveling)
| ||||
Without Micrometer
|
0.7mm (0.03 in.)
|
1.5mm (0.06 in.)
|
2.0mm (0.08 in.)
| |
With Micrometer
|
0.5mm (0.02 in.)
|
n/a
| ||
Compensator
| ||||
Type
|
Pendulum compensator with magnetic damping system
| |||
Setting Accuracy
|
0.3″
|
0.5″
| ||
Working Range
|
±15′
| |||
Circular level
| ||||
Sensitivity
|
10′ / 2mm
| |||
Horizontal circle
| ||||
Diameter
|
103mm (4.1 in.)
| |||
Minimum Division
|
1°/ 1gon
| |||
General
| ||||
Water Resistance
|
IPX6 (IEC 60529:2001)
| |||
Operating Temperature
|
-20℃ to +50℃ (-4°F to +122°F)
| |||
Size
|
Width
|
130mm (5.12 in.)
| ||
Length
|
215mm (8.46 in.)
| |||
Height
|
140mm (5.51 in.)
|
135mm (5.31 in.)
| ||
Weight
|
1.85kg (4.1 lbs.)
|
1.7kg (3.7 lbs.)
| ||