Yellow Color Digital Dumpy Level , 20CM Min Focus Digital Surveying Instruments
Brand Name:Topcon
Model Number:AT-B2,At-B4
Minimum Order Quantity:1
Delivery Time:within 3-5work days after the goods are paid .
Payment Terms:TT ,Western Union
Place of Origin:China
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Location:
Shanghai Shanghai China
Address:
Rm.306-308,No.5 Building,Jinglian Road 439#,Minhang District,Shanghai,China
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Product Details
Topcon AT-B Series Auto Level :
· 3 Models - 32x, 28x, and 24x Magnifications
· Rapid, Accurate, and Stable Automatic Compensation
· Ultra-Short 20cm (7.9 in.) Focusing
· All-Weather Dependability
· Clampless, Endless Fine Horizontal Adjustments
AT-B series SPECIFICATIONS
AT-Bseries SPECIFICATIONS | AT-B2 | AT-B3 | AT-B4 | |
Telescope | ||||
Length | 215mm (8.46 in.) | |||
Magnification | 32X | 28X | 24X | |
Objective Aperture | 42mm (1.65 in.) | 36mm (1.42 in.) | 32mm (1.26 in.) | |
Resolving Power | 3″ | 3.5″ | 4″ | |
Field of View | 1°20′ | 1°25′ | ||
Minimum Focus | 0.2m (7.9 in.) from end of telescope | |||
Image | Erect | |||
Stadia Constant | 0 | |||
Stadia Ratio | 100 | |||
Accuracy (1km double run leveling) | ||||
Without Micrometer | 0.7mm (0.03 in.) | 1.5mm (0.06 in.) | 2.0mm (0.08 in.) | |
With Micrometer | 0.5mm (0.02 in.) | n/a | ||
Compensator | ||||
Type | Pendulum compensator with magnetic damping system | |||
Setting Accuracy | 0.3″ | 0.5″ | ||
Working Range | ±15′ | |||
Circular level | ||||
Sensitivity | 10′ / 2mm | |||
Horizontal circle | ||||
Diameter | 103mm (4.1 in.) | |||
Minimum Division | 1°/ 1gon | |||
General | ||||
Water Resistance | IPX6 (IEC 60529:2001) | |||
Operating Temperature | -20℃ to +50℃ (-4°F to +122°F) | |||
Size | Width | 130mm (5.12 in.) | ||
Length | 215mm (8.46 in.) | |||
Height | 140mm (5.51 in.) | 135mm (5.31 in.) | ||
Weight | 1.85kg (4.1 lbs.) | 1.7kg (3.7 lbs.) | ||
Yellow Color Digital Dumpy Level , 20CM Min Focus Digital Surveying Instruments
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