This book provides hands-on guidance for accurately locating and drilling holes on jigs, fixtures, and plates. It covers the button method, the disk method, and related approaches that help ensure holes line up exactly as planned.

Clear, step-by-step instructions show how to use common shop tools—micrometers, vernier height-gages, and test indicators—to set positions, verify distances, and check concentricity. Real-world examples illustrate how careful setup reduces errors and saves time in the milling shop.

How to set and verify button positions for precise hole layouts
Using disks and bushings to locate centers and drill holes
Methods for dividing circles and spacing holes evenly
Techniques for measuring, testing, and confirming accuracy in practice

Ideal for machinists, toolmakers, and shops pursuing high-precision drilling and assembly work.

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