Jet Orifice Calipers
Until now the only method of accurately measuring the actual orifice diameter has been plug gauges which is time consuming and very expensive. We have modified these calipers on a cutter grinder to gain access to the jet orifice and measure its diameter to .001 accuracy.
Orifice diameter and jet numbers are not only the same, included is a chart listing orifice diameter to jet numbers. Now you can put those mis-marked, unmarked and re-drilled jets in order and actually know what to expect when you make your next jet change.
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