Basic Info.

Model NO.

B4A

HS Code

9015300000

Model NO.

B4A

HS Code

9015300000

Package size per unit product

10.00cm * 15.00cm * 20.00cm

Gross weight per unit product

3.000kg

Product Desciption

Topcon New Model at-B4a Auto Level

Telescope	AT-B2	AT-B3A	AT-B4A
Magnification	32x	28x	24x
Field of view	1°20'	1°25'	1°25'
Min. focus from center	0.3mm
of the instrument
Image	Erect
Stadia	Yes(1:100)
Focusing knob	2-speed	1-speed	1-speed
Accuracy (1km double run leveling)
Focusing knob	0.7mm	1.5mm	2.0mm
With micrometer	0.5mm	N/A	N/A
Compensator
Type	Pendulum compensator with magnetic damping system
Setting accuracy	0.3''	0.5''	0.5''
Working range	±15'	±15'	±15'
Horizontal circle
Minimum division	1°/1 gon
General
Water rating	IPX6(IEC 60529: 2001)
Operating temp	-20ºC to 50ºC
Width	122mm	122mm	122mm
Length	215mm	214mm	214mm
Height	140mm	140mm	140mm
Weight	1.85kg	1.5kg	1.5kg