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Thread: Depth gauge

  1. #1
    Supporting Member Christophe Mineau's Avatar
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    Jul 2014
    France, Brittany !
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    Christophe Mineau's Tools

    Depth gauge

    This is the last tool I made, it's a depth gage.
    It's a quite classical design, but a feature thing I wanted is to be able to lock the measure with a single hand.
    That's why I put this large brass knob, so that I can turn it with the thumb, while holding the tool in my right hand, and possibly holding the piece I want to measure in the left hand.

    Here I am measuring the location of the tone holes on a flute that I made. I gauge the hole using the right drill bit, then measure with the depth gauge from the bottom up to the drill bit. Just need to add half the size of the bit to get the position of the axis.
    Obviously, I need both hands to do that, hence the thumb knob.

    To get minimum friction of the rod in the body of the tool, I actually drilled the hole larger and put some boxwood bushes at both sides, so that it slides easily, but with no play.

    It's made out of oak, and the rod is a painted steel rod, salvaged from I don't remember what.

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    Last edited by Christophe Mineau; Nov 12, 2015 at 12:47 PM.
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  2. The Following 4 Users Say Thank You to Christophe Mineau For This Useful Post:

    Jon (Nov 12, 2015), kbalch (Nov 12, 2015), Paul Jones (Nov 13, 2015), PJs (Nov 13, 2015)

  3. #2
    Supporting Member mklotz's Avatar
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    Nicely done, indeed. Re holding the measurement until you can lock it in, you might find the approach discussed here suggestive...

    and once you've got the measurement locked into the gage, here's an easy way to read it accurately...

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    Regards, Marv

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  4. The Following User Says Thank You to mklotz For This Useful Post:

    Paul Jones (Nov 13, 2015)

  5. #3
    Content Editor
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    Aug 2013
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    Thanks Christophe! We've added your Depth Gauge to our Height and Depth Gauges category, as well as to your builder page: Christophe Mineau's Homemade Tools. Your receipt:

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