RSK
Precision Square Level
- Grade AA, A and B are manufactured and inspected under the JIS B 7510 standard.( See P5. for further information on each grade. )
- Grade AA has ±0.2 scale all range accuracy in the main bubble.
- These three types have less than 3μm accuracy in flatness between base and side. ( 0.02mm/m type )
- Squareness between base and both side is 0.015mm/m. ( 0.02mm/m for Grade A )
- Grade AA and Grade A have a bubble chamber in which the length of the bubble is manually adjustable.