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  1. #1
    Join Date
    Sep 2008
    Location
    Riddells Creek, Vic.
    Posts
    831

    Default An Addition to a Surface Gauge for Checking Squareness.

    I have been meaning to make one of these simple fittings for ages but always got by just using a ball bearing of about 5/8" diameter in the front Vee in the base of the surface gauge. That method works quite well but is a bit of mucking around and you have to keep chasing the ball around the surface plate.

    I was prompted to spend a few hours making something more user friendly after reading a discussion on PM about a You Tube video by The Tool and Die Guy where he shows his version.

    First step was to drill and tap M4 holes in the base.
    photo 2.JPG


    Machining the 50mm Radius using a boring head.
    photo 1.JPG


    The almost finished product.
    photo 3.JPG


    Setting up on Master Square.
    photo 4.JPG


    Checking the actual part that I made it for.
    ( Saddle from Hercus Computurn)
    photo 5.JPG

  2. #2
    Join Date
    Jun 2008
    Location
    Victoria, Australia
    Age
    74
    Posts
    5,080

    Default

    Nicely made, and a very handy device to have around.

    I have a similar setup, and for fun tested all the squares... out of all the squares in the workshop, only one was even close to actually being square.

    Of course, once you get three things square to each other, you have a reference to work with. Same concept as getting three things flat.

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