This standard applies to planchets made in well, flat and dish-type configurations used with nuclear instruments and intended for the mounting of specimens for radioactive assay. A dish-type planchet is distinguished from a well-type planchet by having a rim.
SIS SS IEC 248:1988 history
1988SIS SS IEC 248:1988 Nuclear instrumen ta tion — Dimensions of planchets usedin nuclear electronic instruments