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Spectra AL28M
Automatic Level Spectra AL28M are designed for a variety of elevation control and alignment tasks including general building construction, cut and fill measurements, area leveling, and landscaping.
Automatic Level Spectra AL28M are easy to set up and attaches quickly to flat or domed head tripods. An adjustable built-in bubble mirror can be tilted for easy viewing of the circular bubble in any position. A built-in optical peep sight and double-sided endless tangent drives allow for easy targeting and operation with either hand.
Features Spectra AL28M
• Choice of magnification: 28x
• 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 increases durability
• Water resistant construction
Specifications Spectra AL28M
• Magnification: 28x
• Color: Yellow
• Objective Diameter: 30 mm
• Field of View Angle: 1° 20'
• Shortest Focusing Distance: 0.6 m
• Stadia Constant: 100
• Additive Constant: 0
• Compensator Dampening: Air
• Compensator Range: ± 15'
• Compensator Setting Accuracy: < 0.5"
• Double Run Leveling per 1 km: 2 mm
• Circular Vial Accuracy: 8/ 2 mm
• orizontal Circle: 1°
• Weight: 3.5 lb ( 1.6 kg)
• Base Plate: 5/ 8 x 11
