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Thread: Another mystery tool

  1. #1
    Join Date
    Dec 2008
    Posts
    362

    Default Another mystery tool

    One of my hangar neighbors was cleaning out an old desk, used by a now 10 years deceased old school aircraft mechanic, and among the Pratt & Whitney radial engine tools and other debris was a couple of these things:







    I'm thinking some sort of crimping tool?

    I'm using one of them as a 'stop' for my spindle holding tool.



    The magnet holds the tool in place, the "tool" limits rotation of the spindle on My Emco-Meier Mill while changing tooling.

  2. #2
    Join Date
    Mar 2007
    Location
    Central Massachusetts
    Posts
    181

    Default

    Those clamp onto a framing square. For repeated cuts when making stair treads is one use.
    Bricolage anyone?....one of lifes fun games.

  3. #3
    Join Date
    Jan 2010
    Location
    Kansas City area
    Posts
    3,291

    Default Tools

    Yup - one on each leg of the square. Good for building roofs too. It's an easy way to do repeatable angle marking.

  4. #4
    Join Date
    Dec 2008
    Posts
    362

    Default

    Well, I guess old Harry was a carpenter, as well as an ass-kick aircraft mechanic! Thank's guys!

  5. #5
    Join Date
    Apr 2011
    Location
    SW Michigan
    Posts
    4,000

    Default

    We always called them stair knockers.
    "Patriotism is supporting your country all the time, and your government when it deserves it". Mark Twain

  6. #6
    Join Date
    Sep 2011
    Location
    Calgary, Canada
    Posts
    65

    Default

    Here's a set you can buy with a diagram of how to use them.




  7. #7
    Join Date
    May 2006
    Location
    north bay area
    Posts
    4,307

    Default

    Agreed stair gauges, and about the nicest ones i've ever seen.

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