Specifications Model

B20

Telescope

Length

215mm (8.46in.)

Magnification

32x

Objective aperture

42mm (1.65in.)

Resolving power

3"

Field of View
(at 100m/328ft.)

1°20'
(2.3m / 7.5ft.)

Minimum focus

0.2m (7.9in.) from end of telescope
0.3m (1ft.) from instrument center

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
(0.03in.)

With micrometer

0.5mm
(0.02in.)

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.)