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MIL-STD-10 Cancellation Notice 3, January 3, 1966
Cancellation Notice 3 Only
Superseded By: ANSI B46.1
SURFACE ROUGHNESS, WAVINESS AND LAY
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This standard covers surface irregularities with respect to their height, width, and direction. It shall replace all former practices for specifying finishes or surface conditions and shall apply to any surface of sufficient hardness to be evaluated in terms of microinches (millionths of an inch) under the provisions herein specified.

Purpose. This standard establishes a uniform system for the identification and specification of the geometric irregularities of the surfaces of solid materials. It provides, through the use of symbols and numerical classifications, a means for accurately expressing surface roughness, waviness and lay requirements on drawings, in specifications, or verbally.