Spectra Precision AL28M Automatic Level 28 power Magnetically Dampened
Easy-to-Use Optical Level |
| The AL28M 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. |
| Spectra Precision AL28M INCLUDES |
- AL28M – 28 Power Magnification Automatic Site Level
- Protective Case
- Operating Manual
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| Spectra Precision AL28M FEATURES and BENEFITS |
- Magnetic dampened compensator
- Double-sided, continuous horizontal tangent drives
- Stadia lines for simple distance measurement
- Convenient horizontal angle measurement
- Built in bubble mirror and sighting guide
- Metal housing for increased durability
- Water resistant construction
- Includes hard shell case
- Two-person leveling across the job site
- Leveling forms and footers
- Checking elevation
- Measuring cut and fill
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Spectra Precision AL28M TECHNICAL DATA
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- Magnification: 28X
- Dampening: Magnetic
- Accuracy*: +/- 1.5mm (0.06 inch)
- Leveling Accuracy @ 50m: 2.5mm
- Telescope:
- Aperture: 30mm (1.2 inch)
- Telescope image: Erect
- Field of view angle: 1⁰20′
- Shortest focus distance: 0.60m (1.97 ft.)
- Stadia constant: 100
- Addition constant: 0
- Dimensions (L x W x H): Instrument: 103 x 190 x 135mm (5.2 x 7.5 x 5.3 in.)
- Dimensions (L x W x H): Case: 170 x 280 x 190mm (6.7 x 11 x 7.5 in.)
- Weight Instrument: 1.6 kg (3.5 lb)
- Weight Case: 1.25kg (2.75 lb)
- * Standard deviation according to DIN 18723 on 1 km of double leveling
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| Part Number |
Power |
Dampened |
Tripod |
Rod |
| AL28M |
28 |
Magnetic |
No |
No |
| AL28M-1 |
28 |
Magnetic |
Yes |
15-foot 10ths |
| AL28M-2 |
28 |
Magnetic |
Yes |
15-foot Inches
|
| AL28M-3 |
28 |
Magnetic |
Yes |
15-foot Metric
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