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Spectra AL28M Automatic Level Spectra AL28M 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
Complete with:
• Alumunium tripod
• Levelling staff / Rambu ukur
