工程師精密資料口袋參考書

Finally, a compact reference that actually has the hole coordinate charts pre-calculated instead of making me do them from scratch. The speeds and feeds tables alone saved me at least fifteen minutes on my last job setup.

Almost every job I do needs a tap drill or hole coordinate, and this thing has them all pre-calculated so I’m not digging through a binder mid-task. The speeds and feeds section alone has saved me multiple trips back to the shop computer. Fits easy in my back pocket and takes a beating.

I keep this in my shirt pocket on the floor, and the hole coordinates with common sizes already worked out mean I skip the math during setup. The speeds/feeds section alone has saved me from guessing on a dozen jobs already.