Newnes Mechanical Engineers pocket book, ISBN – 0-434-91988-8; mine is the 1st 1990 edition full of info that you will ever need for every day use, not oil proof but excellent ref book. My instant grab book is the Zeus ref pocket book metric revision 95, oil / water proof- Buck & Hickman, around £6, available from B & H or Amazon. I have also downloaded ref /conversion charts from 't'internet & laminated them for garage/man cave use, stuck on cabinets with magnets, usual disclaimer applies.
George.
p.s. I also have the 'Model Engineers Handbook' by Tubal Cain.
Edited By mechman48 on 09/06/2019 11:02:05