TELESCOPE

AX-2S

AP-8

AS-2C

Tube length:

7.5 in (190 mm)

7.5 in (190 mm)

10.2 in (259 mm)

Image:

erect

erect

erect

Effective diameter of objective:

1.2 in (30 mm)

1.2 in (30 mm)

1.77 in (45 mm)

Magnification:

20x

28x

34x

Resolution power:

4.5"

3.5"

2.5"

Field of view:

1°30' (2.6 ft @ 100 ft)

1°30' (2.6 ft @ 100 ft)

1°20' (2.3 ft @ 100 ft)

Minimum focusing distance:

2.46 ft (0.75 m)

2.46 ft (0.75 m)

3.28 ft (1.0 m)

Stadia ratio:

1:100

1:100

1:100

Stadia additive constant:

+10 cm

+10 cm

0

LEVEL VIAL SENSITIVITY

Circular level:

10' / 2 mm

10' / 2 mm

10' / 2 mm

STANDARD DEVIATION

per 1-km double-run leveling:

±1.5 mm

±1.5 mm

±0.8 mm

With micrometer:

±0.4 mm

AUTOMATIC COMPENSATOR

Type:

wire-hung, magnetic damper

wire-hung, magnetic damper

wire-hung, air damper

Compensation range:

±16'

±16'

±12'

Setting accuracy:

±0.5"

±0.5"

±0.3"

HORIZONTAL CIRCLE

Diameter of circle:

4.3 in (110 mm)

4.3 in (110 mm)

3.2 in (80 mm)

Minimum increment:

1° / 1 g

1° / 1 g

1° / 1 g

Scale reading (direct):

1° / 1 g

1° / 1 g

10' / 10 cg

Reading by estimation:

0.1° / 0.1 g

0.1° / 0.1 g

1' / 1 cg

DIMENSIONS

Instrument (L X W X H):

7.5 x 5.0 x 4.8 in

7.5 x 5.0 x 4.8 in

10.2 x 5.4 x 5.6 in

Carrying case (L X W X H):

11.5 x 6.7 x 6.4 in )

11.5 x 6.7 x 6.4 in )

14.9 x 7.7 x 7.8 in)

WEIGHT

Instrument:

2.8 lbs (1.25 kg)

2.8 lbs (1.25 kg)

4.2 lbs (1.9 kg)

Carrying case:

2.7 lbs (1.2 kg)

2.7 lbs (1.2 kg)

4.2 lbs (1.9 kg)