Specification :

Specifications Waterpass Topcon AT-B4
TELESCOPE AT-B4
Length: 215 mm
Magnification: 24X
Objectives Aperture: 32 mm
Resolving Power: 4 "
Field of view ( at 100 m) : 1 ° 25 ' ( 2, 5 m)
Minimum Focus: 0, 2 m from the end of the telescope
0, 3 m from the instrument center1 ° 20 '
image: upright
Constant stadia: 0
Stadia Ratio: 100
Focus Knob: 1-speed
Apparitions Help: Gun Sight

Accuracy ( 1km double run leveling)
Without Micrometer: 2, 0 mm
With Micrometer: N / A

compensator
Type: Pendulum compensator with magnetic
damping system
Setting Accuracy: 0, 5 "
Working Range: ± 15 '
Circular Level
Sensitivity: 10 ' / 2mm

horizontal circle
Diameter: 103 mm
Minimum Division: 1 ° / 1gon

general
Water Resistance: IPX6 ( IEC 60529: 2001)
Operating Temperature: -20 º C to + 50 º C
Size ( W x L x H) : H: 135mm
Weight: 1.7 kg