Topcon AT B4A Auto Level is a precision instrument used in surveying and construction applications. We are the best Topcon AT B4A Auto Level Manufacturer in Uttarakhand. Our auto level is designed to deliver high accuracy and durability in challenging work environments. This instrument features a 32x magnification lens, a powerful magnetically dampened compensator, and a clear, bright field of view. Our Topcon AT B4A Auto Level is easy to use and has a wide range of applications, including measuring angles, elevations, and distances.
Topcon AT B4A Auto Level from Jafri Survey Instruments is designed to withstand the toughest conditions on the job site. It has a waterproof and dustproof construction that ensures our auto level can be used in any weather conditions. It also features a rugged housing that protects our auto level from accidental drops and impacts.
Our Topcon AT B4A Auto Level includes an automatic compensator that ensures that the instrument remains level even on uneven terrain. This feature ensures that the measurements are accurate, even when the terrain is not level. Our Topcon AT B4A Auto Level also has a quick set up time, allowing the user to get started with their measurements quickly.
Apart from being a manufacturer, Jafri Survey Instruments export our products as a Topcon AT B4A Auto Level Exporter in India. Overall, our Topcon AT B4A Auto Level is a reliable and accurate instrument that is ideal for use in surveying and construction applications. Its robust construction and ease of use make it a popular choice among professionals in the field.
AT-B2 | AT-B3 | AT-B4 | ||
Telescope | ||||
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 (at 100m/32ft.) | 1°20' (2.3m / 7.5ft.) | 1° (2.5m / 8.2ft.) | ||
Minimum Focus | 0.2m (7.9 in.) from end of telescope 0.3m (1ft.) from instrument center |
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Image | Erect | |||
Stadia Constant | 0 | |||
Stadia Ratio | 100 | |||
Focusing Knob | 2-speed | 1-speed | ||
Sighting Aid | Peep Sight | Gun Sight | ||
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 | ||
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°C to +50°C (-4°F to +122°F) | |||
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.) |