Iso: — 1), geometrical product specifications ( gps) — surface texture: profile method; surfaces having stratified functional properties — part 3: height characterization using the material probability curve. part 1: filtering and general measurement conditions the european standard en iso: 1997 has the status of a british standard ics 17. iso 13565 consists of the following parts under the general title geometrical product specifications ( gps) — surface texture: profile method; surfaces having stratified functional properties: part 1: filtering and general measurement conditions part 2: height characterization using the linear material ratio curve. the surface roughness should be measured according to iso, isoand iso, by using the following particular parameters: a) use always a filtered profile ( roughness profile), by applying the standard gaussian filter, with a cut- off of 0, 8 mm. 1 to bs iso: 1996 ( renumbers bs as bs en iso: 1998). general information status : withdrawn publication date : edition : 1 number of pages : 6. 0 is0 1996 all rights reserved. bs iso: 1996 ( renumbers bs as bs en iso: 1998) this british standard, having been prepared under the direction of the engineering sector board, was published under the authority of the standards board and comes into effect on bsiisbnnational foreword. contains the evaluation process for determining parameters from the linear representation of the material ratio curve which describes the increase of the material portion iso 13565 pdf of the surface with increasing depth of the roughness profile. 20 bs en iso: 1998 incorporating amendment no. [ 3] iso/ tr 14638: 1995, geometrical product specifications ( gps) — masterplan. part i: filtering and general measurement conditions part 2: height characterization using the linear material ratio curve pdf part 3: height characterization using the material probability curve annexes and b of this part of is0 13565 are for information only.