The hole are measured in inches.
Top to bottom;
1st = 2.25 up 0.75 back
2nd = 1.75 up 1.50 back
3rd = 1.25 up 0.75 back
4th = 0.75 up 1.50 back
You better sharpen that 41/64th drill bit

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Common sense, the least common of all the senses.
Mom.

For fear of ridicule, society stifles creativity.
Ricky Valdes