190131 Model 433 190931 4310132 1020131 Reddevil model 392 obsolete. no replacement Ritzstichel nach Sikkens, Modell 463; Model 463, Order number: 0100.01.31;Scratch Stylus acc. to Sikkens RitzhärteprüfgerätSCRATCH HARDNESS TESTER 413 Obsolete EN-20 replaced by Modell 515 Modell 515 433 430P-2 Model 111 Model 312 Order number: 0002.01.31 MODEL 463, Order code 0100.01.31;Scrach stylus acc. to Sikkens