TOPCON B20 Auto Levels

Telescope

Length: 215mm (8.46in.)

Magnification: 32x

Objective Aperture: 42mm (1.65 in)

Resolving Power: 3"

Field of View (at 100m/328ft.): 1°20' (2.3m / 7.5ft.)

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

Focusing Knob: 2-speed

Sighting Aid: Peep Sight

Accuracy (1km double run leveling)

Without Micrometer: 0.7mm (0.03 in.)

With Micrometer: 0.5mm (0.02 in.)

Compensator

Type: Pendulum compensator with magnetic damping system

Setting Accuracy: 0.3”

Working Range: ±15'

Circular Level

Sensitivity: 10' / 2mm

Horizontal Circle

Diameter: 103mm (4.1in.)

Minimum Division: 1°/ 1gon

General

Water Resistance: IPX6 (IEC 60529:2001)

Operating Temperature: -20 to +50ºC (-4 to +122°F)

Size

Width 130mm (5.12in.)

Length 215mm (8.46in.)

Height 140mm (5.51in.)

Weight 1.85kg (4.1lbs.)

Datasheet