Knowing that nominal 16 ga is .662" when you set your gauge to check a 16 instead of setting 0 you could set at +.038 then read direct from the gauge the relationship to nominl bore dia. Keep in mind if checking an early L C Smith they bored the 16 to .650".
PS; I don't actually have a "Skeets" but as a machinist have used numerous dial bore gauges. I am assuming this uses a standard dial indicator having .100" travel. Of course with the .700 setting anything larger you simply read as .7xx while if it is smaller you can then read as .6xx which would really be the best way for the 16. some dial indicators do have secondary numerals reading opposite direction, don't know if the Skeets does or not. If so this is where seting 0 in the bore would be handy for reading the choke as would read direct amount of constriction on the secondary numerals.
Last edited by 2-piper; 02/12/09 08:32 AM.
