Model

B40

B30

B20

Telescope

Length

215mm(8.46 inch)

Objective aperture

32mm

36mm

42mm

Magnification

24X

28X

32X

Image

Erect

Resolving power

4'

3.5'

3.0'

Field of view(at 100m)

1° 25′ (2.5m)

1° 20′ (2.3m)

Minimum focussing distance

0.2m (7.9in.) from end of telescope

0.3m (1ft.) from instrument cener.

Reticle pattern

Cross hairs

wedge

Stadia ratio

100

Stadia constant

0

sighting aid

Gun sight

Peep sight

Focusing Knob

1-speed

2-speed

Lense hood

-

Retractable

Accuracy(standard deviation for 1km double run leveling)

Without micrometer

2.0mm

1.5mm

0.7mm

(0.08in.)

(0.06in.)

(0.03in.)

With micrometer

0.5mm

(0.02in.)