Question About Orifice Drill Bits
Hello. I've always used orifice drill bit sets. The one that come in the blue hard cases and are numbered not fractional. I am looking for a new set and notice they are pretty pricey. I was looking for a regular drill bit set online and came across a set that has fractional, lettered, and numbered drill bits. The numbered drill bits are 1-60 and I guess correspond to wire gauge.
What I want to know is if this is the same measuring system used to measure gas orifice sizes.
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