Model

DSA200

DSA220

DSA240

DSA260

DSA280

DSA300

DSA320

Magnification

20X

22X

24X

26X

28X

30X

32X

StandardDeviationfor 1kmDuble-RunLevelling

±2.5mm

±2.0mm

±2.0mm

±1.5mm

±1.5mm

±1.5mm

±1.0mm

Objective Aperture

32mm

32mm

38mm

38mm

40mm

40mm

40mm

Telescope

Erect

Erect

Erect

Erect

Erect

Erect

Erect

Setting Accuracy

±0.8”

±0.8”

±0.8”

±0.5”

±0.5”

±0.5”

±0.3”

Working Range

±15’

±15’

±15’

±15’

±15’

±15’

±15’

Compensator Type

Air+Magnetic

Dual-Damping

Air+Magnetic

Dual-Damping

Air+Magnetic

Dual-Damping

Air+Magnetic

Dual-Damping

Air+Magnetic

Dual-Damping

Air+Magnetic

Dual-Damping

Air+Magnetic

Dual-Damping

Shortest focussingdistance

0.6m

0.6m

0.6m

0.6m

0.6m

0.6m

0.6m

Field of View

1°20’

1°20’

1°20’

1°20’

1°20’

1°20’

1°20’

Multiplication Constant

100

100

100

100

100

100

100

Additive Constant

0

0

0

0

0

0

0

Sensitivity of Circular Level

8’/2mm

8’/2mm

8’/2mm

8’/2mm

8’/2mm

8’/2mm

8’/2mm

Graduation Intervalofcircle

1°or 1 gon

1°or 1 gon

1°or 1 gon

1°or 1 gon

1°or 1 gon

1°or 1 gon

1°or 1 gon

Connected with Tripod

M16 or 5/8”

M16 or 5/8”

M16 or 5/8”

M16 or 5/8”

M16 or 5/8”

M16 or 5/8”

M16 or 5/8”

Colors