Forums Tools and Other Hardware What Instruments used to measure Girdle thickness & [W] Width of Stone? Reply To: What Instruments used to measure Girdle thickness & [W] Width of Stone?

  • Alan Balmer

    Administrator
    May 7, 2016 at 1:40 pm

    Good idea, Joseph. In the US, wire gauge sizes start at about 0.34mm and increase in quite small increments. Metric drills below 1mm are not common, but they are available. I just found on Amazon, listed as “Zona 37-151 High Speed Steel Twist Drill Set, Metric” a set for $16.30 which has 0.3mm-1.0mm in 0.05mm increments, and up to 1.6mm in 0.1mm increments. So they are available.