Dumpy Level and/ Automatic level Description and Specifications for Lab Tenders
Dumpy Level and/ Automatic level Use: performing
simple leveling exercises on building construction sites.
Standards:
• BS 7334-3: 1990;ISO 8322-3:1989
• Specifications:
• Type Automatic
• Image Erect
• Objective Aperture Greater than or equal to 30mm
• Magnification Greater than or equal to
32 times
• Horizontal Circle 1 graduation
• Compensator Air of Magnetic damping
• Compensator Range Not less than + 10'
• Compensator Accuracy Not greater than +/-0.3"
• Standard Deviation of 1 km double run
Not greater than + 1.5mm
• Minimum Focus 1.6m
• Levelling Mechanism Foot Screws
Accessories (to be compatible with the level)
• Tripod (to meet ES12 specifications)
• Leveling staff (to meet ES11 specifications), Cover