Finding the Center of an Existing Drilled Hole

Why would you need to find the center of an already drilled hole? You ask. What would be the point of that?

Well, let’s say you’ve drilled a hole in a piece of wood. Next, assume your initial hole drilled was a ¾” diameter hole. Now, assume the hole-diameter should have been 1-1/2”, for whatever reason. And, let’s also assume that the 1-1/2” diameter hole needs to be centered on the ¾” diameter hole already drilled. A whole lot of assuming  going on here. That’s why you need to know how to find the center of an already drilled hole.

The ¾” dia. drilled hole is shown in the following Photo. This is just a scrap piece of wood. It’s a visual aid; I like visual aids.
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