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Topcon 24X Automatic Level, Model AT-B4
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| Click to enlarge image(s) |
Utilizing a finely tuned magnetic damping system, the Topcon Model AT-B4 Automatic Level quickly levels and stabilizes the line of sight. This precision instrument ensures reliable leveling even when working near heavy equipment or busy highways where fine vibrations could be present. the Topcon Model AT-B4 Automatic Level features IPX6 protection against powerful water jets from all directions and are fully resistant to driving rain and splashing water.
The Topcon Model AT-B4 Automatic Level can directly read horizontal angles in 1° or 1gon 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.
The Topcon AT-B4 Features:
Rapid, Stable, and Durable Compensator
The compensator of the Topcon Model AT-B4 Automatic Level 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 Angle Measurement
The Topcon AT-B4 can directly read horizontal angles in 1° or 1gon 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.) - Ultra-Short Minimum Focus
The Topcon AT-B4 can focus on objects at 20cm (7.9 in.) in front of the telescope. This feature dramatically facilitates the works in confined spaces.
| TECHNICAL SPECIFICATIONS | |
| TELESCOPE | |
| Length: | 215mm (8.46 in.) |
| Magnification: | 24X |
| Objective Aperture: | 32mm (1.26 in.) |
| Resolving Power: | 4 in. |
| Field of View: | 1°25’ (at 100m/328ft.) |
| Min. Focus from end of telescope: | 0.2m (7.9 in.) |
| Min. Focus from instrument center: | 0.3m (1 ft.) |
| Image: | Erect |
| Stadia Constant: | 0 |
| Stadia Ratio: | 100 |
| Focusing Knob: | 1-speed |
| Sighting Aid: | Gun Sight |
| ACCURACY | |
| Without Micrometer: | 2.0mm (0.08 in.) |
| With Micrometer: | n/a |
| COMPENSATOR | |
| Type: | Pendulum compensator with magnetic damping system |
| Setting Accuracy: | 0.5 in. |
| Working Range: | ±15 ft |
| CIRCULAR LEVEL | |
| Sensitivity: | 10 ft./2mm |
| HORIZONTAL CIRCLE | |
| Diameter: | 103mm (4.1 in.) |
| Minimum Division: | 1°/1gon |
| GENERAL | |
| Water Resistance: | IPX6 (IEC 60529:2001) |
| Operating Temperature: | -4°F to +122°F (-20ºC to +50ºC) |
| Dimensions W x L x H: | 5.12" x 8.46" x 5.31" (130mm x 215mm x 135mm) |
| Weight: | 3.7 lbs. (1.7kg) |
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