Size That Pin!

Updated: May 6, 2020

by Gregory Cheng, RPT

If you need to find a center pin size, remember the micrometer reading divided by 2, minus 5, gives the center pin size number.

For example: If your micrometer reads .055 on the center pin, make that a whole number (55). Dividing by 2 equals 27.5. Subtracting 5 equals 22.5. The center pin you are holding is a number 22 ½.

(Pin measurement as a whole number / 2 ) - 5 = Pin Size Number

The next time you spill your center pins all over the place you can place them back in your center pin holder accurately!

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