- Model NO.: Topcon level AT-B4
- Language: English
- Trademark: Topcon
- Model No: Topcon at-B4
- Setting Accuracy: 0.5"
- Specification: CE SGS
The compensator of AT-B Series incorporates four suspension wires made of super-high-tensile metal that features minimal thermal expansion coefficient, providing unmatched durability and accuracy, 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.
Horizontal Circle for Measurement
Horizontal angles can be directly read in 1° or 1 gon units. Free rotation feature allows you to read any angle from zero. The circle is covered for protection against dirt and scratch. The readout window is located below the eyepiece for quick reading.
20cm(7.9 in.) - Short Minimum Focus
The AT-B Series can focus on objects at 20cm(7.9 in.) in front of the telescope. This feature dramatically facilitates working in confined spaces.
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.
Standard Package Components
* AT-B Level * Plumb bob * Hex wrench * Adjusting pins * Vinyl cover * Cleaning cloth
* User manual * Hard case
|Field of View||1°20'||1°25'||1°25'|
|Min.Focus from center of the instrument||0.3m (1 ft.)|
|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||n/a|
|Type||Pendulum compensator with magnetic damping system|
|Minimum Division||1° / 1 gon||1° / 1 gon||1° / 1 gon|
|Water Resistance||IPX6 (IEC 60529:2001)|
|Operating Temperature||-4°F to+122°F (-20°C to +50°C)|
|Width||5.12 in.(130mm)||5.12 in.(130mm)||5.12 in.(130mm)|
|Length||8.46 in.(215mm)||8.46 in.(215mm)||8.46 in.(215mm)|
|Height||5.51 in.(140mm)||5.51 in.(140mm)||5.31 in.(135mm)|
|Weight||4.1 lbs.(1.85kg)||3.7 lbs.(1.7kg)||3.7 lbs.(1.7kg)|