Trimble AL24A/M, AL28A/M, AL32A Autolevels

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Features

Spectra Precision® Autolevels

AL24A/M, AL28A/M, AL32A Autolevels

The AL2XX series automatic levels are designed for a variety of elevation control and alignment tasks including general building construction, cut and fill measurements, area leveling, and landscaping.

Reliable automatic compensators ensure stability and accuracy in the line of sight. Telescope optics are bright and clear providing sharp images for ease of viewing. A short focusing distance provides for better performance in tight spots or on steep slopes. Stadia lines on the reticle make distance calculations easy. A horizontal scale directly below the eyepiece makes angle measurement quick and convenient.

All models include a hard-shell carrying case, plumb bob, rain hood, hex key wrench, adjusting pin, and user guide.

  • Choice of magnification: 24x, 28x or 32x
  • Choice of magnetic or air dampened automatic compensators
  • Double-sided, continuous horizontal tangent drives
  • Stadia lines for simple distance measurement
  • Convenient horizontal angle measurement
  • Built in bubble mirror and optical sighting alignment
  • Metal housing for increased durability
  • Water resistant construction

Applications

  • Two-person leveling across the jobsite
  • Leveling forms and footers
  • Checking elevation
  • Measuring cut and fill

Specifications

Specifications AL24A / AL24M AL28A / AL28M / AL28M-G AL32A
Dimensions (L x W x H)
    Instrument 130 x 190 x 135 mm
(5.1 x 7.5 x 5.3 in.)
130 x 190 x 135 mm
(5.1 x 7.5 x 5.3 in.)
130 x 190 x 135 mm
(5.1 x 7.5 x 5.3 in.)
    Case 170 x 280 x 190 mm
(6.7 x 11.0 x 7.5 in.)
170 x 280 x 190 mm
(6.7 x 11.0 x 7.5 in.)
170 x 280 x 190 mm
(6.7 x 11.0 x 7.5 in.)
Weight
    Instrument 1.6 kg (3.5 lb) 1.6 kg (3.5 lb) 1.6 kg (3.5 lb)
    Case 1.25 kg (2.75 lb) 1.25 kg (2.75 lb) 1.25 kg (2.75 lb)
Accuracy
    Standard deviation according to DIN
    18723 on 1 km of double leveling
+/–2.0 mm +/–1.5 mm +/–1.0 mm
    Leveling accuracy 3 mm @ 46 m
(1/8 in. @ 150 ft)
1.5 mm @ 60 m
(1/16 in. @ 200 ft)
1.5 mm @ 75
(1/16 in. @ 250 ft m)
Telescope
    Magnification 24x 28x 32x
    Aperture 30 mm (1.2 in.) 30 mm (1.2 in.) 36 mm (1.4 in.)
    Telescope image Erect Erect Erect
    Field of view angle 1° 20' 1° 20' 1° 20'
    Shortest focusing distance 0.60 m (1.97 ft) 0.60 m (1.97 ft) 0.60 m (1.97 ft)
    Stadia constant 100 100 100
    Addition constant 0 0 0
Automatic Compensator
    Type
    AL2XA, AL32A
    AL2XM (-G)
Wire suspension:
Air damped
Magnetic damped
Wire suspension:
Air damped
Magnetic damped
Wire suspension:
Air damped

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