Nikon Automatic Level

Precise Automatic Levelling

AC-2S Automatic Level

The AC-2S automatic level deliver a high level of accuracy and ease of use for a variety of civil engineering and construction applications. Compact and lightweight, they are also built rugged and water resistant, giving you reliable performance in light rain or dusty job sites. Equipped with Nikon’s world-renowned optics, it is known to provide brighter, clearer images and an improved minimum focusing distance for working in confined spaces. Plus, a built-in magnetic-dampened compensator automatically levels the line of sight. Lastly, the new horizontal tangent knobs are operatable with either hand with an unlimited range ensure smooth, precise pointing and angular measurement.

Powerful Optics

Brighter, sharper images even in low-visibility conditions.


Rugged, water-resistant design for light rain or dusty conditions.


Smooth, precise pointing and angular measurement.

Superior Nikon Optics

You’ll see the difference when you look through the Nikon AC-2S automatic level. Nikon optics effectively let in more light resulting in brighter, sharper images, especially in low-visibility conditions. Better optics help you aim more precisely as you see much more detail and much less distortion, and they’re much easier on your eyes—something you’ll really appreciate on long workdays. The AC-2S features a 24x magnification telescope, offering improved minimum focusing distance at 2.46 ft (0.75 m) for better performance in tight spots and on steep slopes.

Packed with New Features

Nikon Optics

Brighter, sharper images even in low-light conditions.

Horizontal Tangent Knobs

Smooth, precise pointing and angular measurement, operatable with either hand.

Reliable Construction

Rugged, water-resistant construction lets you work in light rain or dusty conditions.

Magnetic-Dampened Compensator

Automatically levels the line of sight with a setting accuracy of within ±0.5″.

Friction Brakes

Eliminates the need for horizontal alignment clamps, allowing for rapid rotation.

Technical Specifications


  • Tube length: 190 mm (7.5 in)
  • Image: erect
  • Magnification: 24x
  • Effective diameter of objective lens: 30 mm (1.2 in)
  • Field of view: 1°30’(2.6 ft @ 100 ft)
  • Minimum focusing distance: 0.75 m (2.46 ft)
  • Stadia ratio: 1:100
  • Stadia additive constant: 0

Automatic Compensator

  • Type: wire-hung, magnetic damper wire-hung, magnetic damper wire-hung, magnetic damper
  • Compensator range: ±16’
  • Setting accuracy: ±0.5”

Horizontal Circle

  • Diameter of circle: 110 mm (4.3 in)
  • Minimum increment: 1°/1 g
  • Reading estimation: 0.1°/0.1g

General Specifications

  • Circular Level Vial Sensitivity: 10’/2 mm
  • Standard Deviation (1 km double-run leveling) without micrometer: ±2.0 mm

Physical Specifications

  • Instrument Dimensions (L x H x W): 190 x 128 x 123 mm (7.5 x 5.0 x 4.8 in)
  • Carrying case dimensions: 292 x 170 x 163 mm (11.5 x 6.7 x 6.4 in)
  • Instrument weight: 1.25 kg (2.8 lb)
  • Carrying case weight: 1.2 kg (2.7 lb)