This pocket book is a great resource for anyone working in a shop. It’s designed for metal workers and machinists, but the information contained within comes in handy in lots of situations. Best of all, it’s durable enough to survive in a shop environment, and every page is coated in a glare-free laminate that resists tearing and won’t get all filthy.
Inside there’s a wealth of practical information like conversion tables, hardening and tempering information, engineering frawing standards, tolerances, bolt and nut standards, and keys and keyway standards. You’ll also find the weights of metals, tapping drill sizes, and lots, lots more.
Street pricing starts around $20.