O-Rings have always been tough to check using an ordinary A-scale durometer, but now ELECTROMATIC Equip't offers the O-Ring Fixturing set (ORF-1) which enables the user to check o-rings with the combination of an A-scale Rex Durometer and a operating stand. The set consists of five fixtures and one set plug (for setting operating stand travel). The standard O.R.F.-1 set can be used to test O-Rings with cross sections of 1/16", 3/32", 1/8", 3/16" and 1/4". Custom and metric o-ring fixtures can be special ordered.