MODEL

Sokkia B40

Sokkia B30

Sokkia B20

Mangnification

24X

28X

32X

Image

ERECT

Reticle

Cross Reticle

Wedge

Objective Aperture

32MM

36MM

42MM

Angel Of View

1°20′

Resolution

≤4.0"

≤3.5"

≤3.0"

Min View Distance

≤0.3M

View Distance Error

≤±0.4%

Focus Error

≤1.0MM

≤0.5MM

Scale

1° or 1gon

 compensator

Magneticdamper

Working Range

≥15′

Bubble

 10′ / 2mm

8′ / 2mm

1KM Error

≤2.0MM

≤1.5MM

≤0.7MM

Compensating Error

≤0.5"

≤0.3"

Setting Accuracy

≤0.5"

≤0.3"

Setting time

≤2s

≤2s

Water Impervious

IPX6

Accessories

Manual/Plumb bob/Allen Key /Adjusting pin/Downy Cloth/Sicdative each one