Standard Test Method sizes of granite stone

What standard test method is granite stone Size? Xiao Bian gave you today about science. landscaping stone
Polished Slabs
1) Thickness Measurement Limit Tolerance
Vernier caliper with readings 0.1MM measured midpoint four sides. With the difference between the maximum thickness of the same block board and minimum thickness represents the thickness between the very poor. Contract sheet thickness of 20MM, allow the poor of plus or minus 1MM.
2) Limit the plate flatness tolerance measurement methods
With a reading of 0.1MM, length of flat steel tape measure 1000MM will steel flat foot on the plate affixed to two opposite corners, with a feeler foot gap between the surface and the panel surface.stone tile Contract provisions flat plate limit tolerance 0.80MM. 3) Length and width measurement method using readings of steel ruler to measure 1MM. Length, width were measured three straight, with the average value prevail. Record the length and width of the sheet, in order to finally calculate the number.
Ground plate http://www.stonegroupon.com/
1) Thickness Measurement Limit Tolerance
Vernier caliper with readings 0.1MM measured midpoint four sides. With the difference between the maximum thickness of the same block board and minimum thickness represents the thickness between the very poor. Contract floor thickness of 10MM, allow poor of plus or minus 0.50MM.
2) Limit Tolerance flatness measurement method
0.1MM steel tape measure is level with readings, flat steel plate placed against two feet on the corners, with a feeler foot surface and plate surface clearance on. Contract flat floor tolerance limit of plus or minus 0.20MM.
3) the length and width measurements
Steel ruler with a reading of measuring 1MM. Length, width were measured three straight, with the average value prevail. Contracted floor length and width tolerance limit -1MM, floors 305x305MM. 4) the allowable limit tolerance angle with the vertical interior angle tolerance is 0.13MM, interior angle of 90 degrees side 450400MM ruler and a feeler gauge. Square both sides of the plate against the two sides, with a feeler gap between the side plate and Square. With this method of measuring the four corners of the plate. Angle limit stipulated in the contract allowed tolerance 0.40MM.