Specifications

1.Topcon AT-B4 Auto Level
2.WATERPROOF to IPX6 rating
3. 5 Year Manufacturers Warranty.

Topcon AT-B4 Auto Level

 

Place of Origin:

Guangdong China (Mainland)

 Brand Name:Topcon

 Model Number:AT-B2

 Color:Yellow

 

	AT-B2	AT-B3	AT-B4
Telescopic
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	1Ÿ20'	1Ÿ25'
(at 100m/328ft.)	(2.3m   / 7.5ft.)	(2.5m   / 8.2ft.)
Minimum Focus	0.2m   (7.9 in.) from end of telescope
	0.3m (1ft.) from instrument center
Image	Erect
Stadia Constant	0
Stadia Ratio	100
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 (-4F to +122F)
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.)