Makes use of the previous measuring parameters under the terminology – Ra and Rz – adopted in ISO 468. SI units are employed but, to allow for the continuing use of drawings and instruments in the ‘inch’ system, the important inch equivalents are also quoted.

BS 1134-2:1972
Original price was: $264.16.$132.00Current price is: $132.00.
Method for the assessment of surface texture-General information and guidance
BSI Group , 08/25/1972


