Measuring main jet

[jamerson84]

Anybody now a good way to measure a main jet on a autolite 1100. I was going to try a step or two leaner of a jet but when I pulled my current jet out of the carb it had no number on it. I have a pair of calipers that I might be able to get a decent measurement with, but I thought I would ask here and see what you guys think.
Thanks.

 

[JackFish]

Drill bit?

 

[jamerson84]

Good idea.

 

[JackFish]

Guitar strings also come in a variety of guages.
If you know someone who plays they will be clipping off the ends after re-stringing.

 

[MPGmustang]

dril bits are the best way... imo

 

[jamerson84]

I tried some old guitar strings and drill bits, but nothing fit super snug (right around .064). The measurement I get just using my calipers is right at .069 . wondering if this measurement Is also the number that would be stamped on the jet normally?

 

[bubba22349]

Depends on carb manufactur ! Numbers stamped on jets don't always follow the drill size some are marked by their flow rate. If you can find a jet number chart for the brand of carb will give you the answer.

 

[MustangSix]

Most machinists have pin gauges to check little holes.