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Spectra Precision Automatic Levels
AL20M, AL24A/M, AL28A/M, AL32A
Easy-to-use optical auto-levels
Applications
» Two-person leveling across
the job site
» Leveling forms
and footers
» Checking elevation
» Measuring cut and fill
Optical Instruments
Features & Benefits
» Choice of magnetic or air dampened
automatic compensators
» Double-sided, continuous horizontal
tangent drives
» Stadia lines for simple distance
measurement
» Retail kit packaging for increased
showroom awareness and sales
» Convenient horizontal angle
measurement
» Built in bubble mirror and sighting
guide
» Metal housing for increased durability
» Water resistant construction
» Includes hardshell case
Air dampened model
All Spectra Precision Auto Levels include a hardshell carrying case, plumb bob, rain hood, hex wrench and adjusting pin.
Automatic Level Specifications
AL20M AL24A AL24M AL28A AL28M / AL28M-G AL32A
Magnification 20× 24× 24× 28x 28x 32x
Accuracy ±2.5 mm* ±2.0 mm* ±2.0 mm* ±1.5 mm* ±1.5 mm* ±1.0 mm*
Aperture 30 mm 30 mm 30 mm 30 mm 30 mm 36 mm
Shortest Focus 0.6 m 0.6 m 0.6 m 0.6 m 0.6 m 0.6 m
Compensator Dampening Magnetic Air Magnetic Air Magnetic Air
Warranty 3 Year, with
instant exchange
3 Year, with
instant exchange
3 Year, with
instant exchange
3 Year, with
instant exchange
3 Year, with
instant exchange
3 Year, with
instant exchange
Part No. Power Dampen Tripod Rod
AL20M 20X Magnetic No No
AL20M-1 20X Magnetic 5301-27-BLK-SP GR151 Tenths
AL20M-2 20X Magnetic 5301-27-BLK-SP GR152 Inches
AL20M-3 20X Magnetic 5301-27-BLK-SP GR153 Metric
AL24A 24X Air No No
AL24A-1 24X Air 5301-27-BLK-SP GR151 Tenths
AL24A-2 24X Air 5301-27-BLK-SP GR152 Inches
AL24A-3 24X Air 5301-27-BLK-SP GR153 Metric
AL24M 24X Magnetic No No
AL24M-1 24X Magnetic 5301-27-BLK-SP GR151 Tenths
AL24M-2 24X Magnetic 5301-27-BLK-SP GR152 Inches
AL24M-3 24X Magnetic 5301-27-BLK-SP GR153 Metric
AL28A 28X Air No No
AL28A-1 28X Air 5301-27-BLK-SP GR151 Tenths
AL28A-2 28X Air 5301-27-BLK-SP GR152 Inches
AL28A-3 28X Air 5301-27-BLK-SP GR153 Metric
AL28M 28X Magnetic No No
AL28M-1 28X Magnetic 5301-27-BLK-SP GR151 Tenths
AL28M-2 28X Magnetic 5301-27-BLK-SP GR152 Inches
AL28M-3 28X Magnetic 5301-27-BLK-SP GR153 Metric
AL32A 32X Air No No
*Note: Standard deviation according to DIN 18723 on one kilometer of double leveling
Magnetic dampened model