Topcon 1012379-03 AT-B3 28X Auto Level

Ahorrar $20.00
TopconSKU: 330428-NC

Precio de venta$700.00 USD Precio habitual$720.00 USD

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Retiro disponible en Ashland, VA

Normalmente está listo en 2 a 4 días


Topcon AT-B2 32X Auto Level - 60907

  • Rapid, accurate, and stable automatic compensation
  • Ultra-short 20cm (7.9in) focusing
  • All-Weather dependability
  • Camp-less, endless fine horizontal adjustments

Auto Level AT-B Series

Three Finest Models Satisfy ALL Levels of Requirements

  • AT-B2 - High-precision model

Rapid, Stable, and Durable Compensator

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 even in the harshest environmental conditions. 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

20cm (7.9in) - Ultra Short Focus Range

The AT-B series can focus on objects at 20cm (7.9in) in front of the telescope. This feature dramatically facilitates the works in confined spaces.

2-Speed Focus (AT-B2)

Rotation speed of the focusing knob is automatically switched between coarse and fine, allowing for quick and precise focusing.

Clamp-Less, and Less Fine Horizontal Adjustments

Fine horizontal knobs located on both sides of the instrument can be operated without clamping, speeding up aiming procedures to the staff and other objects.

Easy to See Circular Vial

Circular level can be viewed via integrated pentagonal prism (AT-B2) or plane mirror (AT-B3/B4) without changing your eye height.

Horizontal Circle For Angle Measurement

Horizontal angles can be directly read in 1° or 1 gon units. Free rotation feature of the horizontal circle allows you to read any angle from zero. The circle is covered for protection against first and scratch. The readout window is located below the eyepiece for quick reading.

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 not only prevents water penetration, but also deters clouding or condensation inside the telescope. 

Distance, Angle, and Height Measurement

In addition to height and angle, distance to the staff can be simultaneously measured using stadia lines. This is accomplished by reading the length of staff between two stadia lines and multiplying the value by 100.

Optional Accessories

  • Diagonal Eyepiece DE16 (AT-B2)/DE22 (AT-B3/B4) - Facilitates your works when the level is set at low height or in confined spaces
  • Optical Micrometer OM5(F) (AT-B2) - Addition of the optical micrometer to the AT-B2 allows for 0.1mm (OM5) or 0.001ft. (OM5F) reading of staffs and improves accuracy to 0.5mm for 1km double run leveling. This combination is ideal for precise leveling
  • 40x Eyepiece EL5 (AT-B2) - Increases magnification of AT-B2 to 40x. Replaces standard eyepiece


Length 215mm (8.46in)
Magnification 28x
Objective Aperture 36mm (1.42in)
Resolving Power 3.5"
Field of View (at 100m/328ft.) 1°25' (2.5m/8.2ft)
Minimum Focus

0.2m (7.9in) from end of telescope

0.3m (1ft) from instrument center

Image Erect
Stadia Constant 0
Stadia Ratio 100
Accuracy (1km Double Run Leveling)
Without Micrometer 1.5mm (0.06in)
With Micrometer N/A
Type Pendulum compensator with magnetic damping system
Setting Accuracy 0.5"
Working Range ±15'
Circular Level
Sensitivity 10'/2mm
Horizontal Circle
Diameter 103mm (4.1in)
Minimum Division 1/1gon
Water Resistance IPX6 (IEC 60529:2001)
Operating Temperature -20 to +50 (-4F to +122F)

Width: 130mm (5.12in)

Length: 215mm (8.46in)

Height 135mm (5.31in)

Weight 1.7kg (3.7lbs)


Standard Package

  • AT-B Level
  • Plumb Bob
  • Hex Wrench
  • Adjusting Pins
  • Vinyl Cover
  • Cleaning Cloth
  • Lens Cap
  • User Manual
  • Hard Carrying Case

The product you have looking at comes with a manufacturer's warranty of 5 years. This means that if there are any defects or malfunctions with the product during this warranty period, we will repair or replace it free of charge.

We believe in the quality and durability of our products, and we want you to have complete peace of mind when making your purchase. Our 5-year warranty is a testament to our confidence in the reliability and performance of this product.

We recommend that you keep a copy of your purchase receipt and the warranty information in a safe place for future reference. If you encounter any issues with your product, please do not hesitate to contact our customer service team, who will be happy to assist you.

We will issue a refund in the original form of payment for merchandise that is unused & in original packaging within 14 days of purchase. Any defective merchandise can be exchanged within 30 days of purchase.

All merchandise returned after 14 days of purchase will have a 20% restocking fee & refund will only be available as store credit. 

The customer is responsible for return
shipping of any returned products, some exclusions may apply.

We do not accept returns or cancellations for special ordered items.

Special Order items include GPS, Total Stations, Utility Locators, or Leica Geosystems products. 

  • Every product comes with Benchmark's lifetime support. If your confused on something, we have experts on staff ready to help with post-sale support. 
  • Certified Repair Center with quick turnaround on warranty repairs.
  • We ship from 6 different locations to ensure quick delivery
  • Pickup at any of our local stores
  • Available to answer questions or take orders by phone at 866-342-7665 (8am-5pm, M-F)


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