Model

B20

B30

B40

Telescope

magnification

32x

28x

24x

Objective aperture

42mm (1.7in.)

 36mm (1.4in.)

 32mm (1.3in.)

Minimum focus

0.2m (7.9in.) from end of telescope,
0.3m (1.0ft.) from instrument center

Accuracy*

Without micrometer

0.7mm (0.03in.)

 1.5mm (0.06in.)

2.0mm (0.08in.)

With micrometer

0.5mm (0.02in.)

-

Compensator

Type

4 wire pendulum compensator with magnetic damping system

Working range 

±15'

Water protection

IPX6 (IEC60529)

Horizontal circle graduation

1º (1gon)

Weight

1.85kg (4.1lb.)

1.7kg (3.7lb.)