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Topcon - AT- B SERIES  

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The GeoMax ZAL100 automatic level series are dependable, durable and economic tools designed for your daily levelling tasks in the construction site.

With three different types of magnification, a new solid-built design and IP54 protection, with a full range of accessories and services, the GeoMax automatic levels provide great quality at affordable value.

Durable, Dependable, High Value Auto Levels

  • Three models - 32x, 28x, and 24x magnifications

  • Ultra-short 20 cm focusing

  • All-weather dependability

  • ±5 Degrees self-leveling range

  • Clampless, endless fine horizontal adjustments

FEATURES

Rapid, stable, durable compensator

The compensator of AT-B Series incorporates four suspension wires made of super-high-tensile metal, which features minimal thermal expansion coefficient - providing unmatched durability and accuracy. The finely tuned magnetic damping system quickly levels and stabilizes the line-of-sight despite the fine vibrations present when working near heavy equipment or busy roadways.

All-weather dependability

With the IPX6 rating, the instrument is protected against powerful water jets from all directions, meaning the AT-B Series withstands a sudden shower or torrential rainfall. The advanced protection design also deters clouding or condensation inside the telescope.

Horizontal circle for measurement

Horizontal angles can be directly read in 1° or 1 gon units. The free rotation feature allows you to read any angle from zero. The circle is covered for protection against dirt and scratches and the readout window is located below the eyepiece for quick reference.

20 cm - Short minimum focus

The AT-B Series can focus on objects 20 cm in front of the telescope. This feature dramatically facilitates working in confined spaces.

SPECIFICATIONS

AT-B2 

TELESCOPE

Magnification :32x         

Field of View  :    1°20’      

Min. Focus from center of the instrument:     0.3 m

Image: Erect

Stadia: Yes (1:100)

Focusing Knob:2-speed 

ACCURACY  (1 km double run leveling)

Focusing Knob:  0.7 mm 

With Micrometer:  0.5 mm    

COMPENSATOR

Type: Pendulum compensator with magnetic damping system

Setting Accuracy: 0.3”      

Working Range:     ±15’ 

HORIZONTAL CIRCLE

Minimum  Division :   1°/1 gon 

GENERAL

Water Rating: IPX6 (IEC 60529:2001)

Operating Temp:  -20ºC to 50ºC

Width: 122 mm 

Length: 215 mm

Height:  140 mm 

Weight: 1.85 kg 

AT-B3A 

TELESCOPE

Magnification :28x       

Field of View  :    1°25’     

Min. Focus from center of the instrument:     0.3 m

Image: Erect

Stadia: Yes (1:100)

Focusing Knob: 1-speed 

ACCURACY  (1 km double run leveling)

Focusing Knob:  1.5  mm 

With Micrometer:  n/a   

COMPENSATOR

Type: Pendulum compensator with magnetic damping system

Setting Accuracy:0.5” 

Working Range:     ±15’     

HORIZONTAL CIRCLE

Minimum  Division :   1°/1 gon 1

GENERAL

Water Rating: IPX6 (IEC 60529:2001)

Operating Temp:  -20ºC to 50ºC

Width: 122 mm

Length: 214 mm

Height:  140 mm

Weight: 1.5 kg

AT-B4A

TELESCOPE

Magnification :24x         

Field of View  :    1°25’     

Min. Focus from center of the instrument:     0.3 m

Image: Erect

Stadia: Yes (1:100)

Focusing Knob: 1-speed 

ACCURACY  (1 km double run leveling)

Focusing Knob:  2.0 mm

With Micrometer:  n/a   

COMPENSATOR

Type: Pendulum compensator with magnetic damping system

Setting Accuracy: 0.5”        

Working Range:     ±15’       

HORIZONTAL CIRCLE

Minimum  Division :   1°/1 gon 

GENERAL

Water Rating: IPX6 (IEC 60529:2001)

Operating Temp:  -20ºC to 50ºC

Width: 122 mm 

Length: 214 mm

Height:  140 mm 

Weight: 1.5 kg

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