D-205 PRECISION LEVEL
The 5 inch (127 mm) long level base, machined from hardened steel, is relieved at each end to provide a 3.50 inch (88 mm) bearing face. It is then lapped flat to within 0.000 06 inch (0.5 μm). The kinematically mounted spirit bubble tube has a sensitivity of 5 arc seconds per division. A metal cover with a glass window protects the spirit bubble tube and mount.
The precision block level can be used as a comparator for measuring and checking small linear differences between gage block combinations or gage blocks and a work piece. By using a horizontal table and bridging with the instrument, it is possible to check a difference of 0.000 005 inch (or 0.5 μm per 50 mm).
The Model D-205C is relieved 3.5 inch (88 mm) in the center with each end lapped flat to within 0.000 02 inches (0.5 μm).
|Sensitivity:||5 arc sec per division ± 1 arc sec|
|Dimensions:(L x H x W)||5 x 1.25 x 1 inch (127 x 31 x 25 mm)|
|Bearing surface:||±0.000 06 inch (0.5 μm)|
|Weight:||2.2 lbs (1 kg)|
|Shipping Weight:||4 lbs (1.8 kg)|