Rsk Master Spirit Level

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• 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.

• Sensitivity (mm/m) represents either height or angle of gradient which is required to move main bubble a scale.
• For example, you will know there is 0.02mm height
• difference 1m away from where you measure,
• when the main bubble moves a scale.

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• 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
• Grade AA and Grade A have an insulating material which prevents heat transfering.
• Grade AA and Grade A have a bubble chamber in which the length of the bubble is manually adjustable.