skan Hello I like science and technology in general. And in particular I like to solve math problems and to dissassemble and design all kind of devices, puzzles, locks… I like outdoor sports and think I cook quite well. regards
Brian Morland MLA Hon skan, Welcome to our forums. Initiation with this as you appreciate maths etc. (I don’t) Its one of a series of engineering drawings to calculate the mean bitting heights (Depths) for the Chatwood redesigned 4½” lock. Plenty more where this came from. Hope we haven’t frightend you off…
Brian Denyer You are welcome. There is quite abit of mathamatics involved in Master Keying and the generation of the keying lists. Brian
