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Thread: Another "What's-it" thread

  1. #1
    Boolit Master corbinace's Avatar
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    Another "What's-it" thread

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    Found at a yard sale this morning.
    It was with some other reloading stuff, but may not be reloading stuff.

    Each is 3 inches long.
    They have a stylized ROC and what appears to be a sizing numeric label on one end and a 0.440"x 1.2 deep hole on the other end.
    Each cylinder is stepped half way end to end. 1.5" of small and 1.5" of larger.

    As labeled ......... measured diameters
    4 1/2-5 1/2 ...... .600 and .630"
    6 1/2-7 1/2 ...... .663 and .697"
    8 1/2-9 1/2 ...... .729 and .760"
    10 1/2-11 1/2 ... .793 and .825"
    12 1/2-13 1/2 ... .857 and .888"

    These measurements may be a tiny bit off as my calipers seem to have a glitch in the needle drive gear.

    These parts are made from aluminum and mounted on a cheesy plastic block with pins.

    The shoulder, or step, is very sharp.

    Definitely not a commercial application in my mind.

    The 6-7 one is the only one showing any signs of use, with some faint lengthwise scratching on the smaller diameter, like a go-nogo.
    Last edited by corbinace; 09-06-2017 at 04:07 PM. Reason: consolidate information

  2. #2
    Boolit Master


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    M-1 Garand Thumb, ????--!!!!!

  3. #3
    Boolit Master corbinace's Avatar
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    Quote Originally Posted by SWANEEDB View Post
    M-1 Garand Thumb, ????--!!!!!
    No Just a mechanic earning his wage.

  4. #4
    Boolit Buddy shell70634's Avatar
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    Would the diameter of each correspond to the inside diameter of shotgun shells?
    “You only make one mistake in this business – you’re either an expert or you’re dead.”
    Col. Thomas J. Kane

    "EXPERT= Ex is a has been, spurt is a drip under pressure" Unknown

  5. #5
    Boolit Master corbinace's Avatar
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    moved content to first post
    Last edited by corbinace; 09-06-2017 at 04:11 PM. Reason: moved content

  6. #6
    Boolit Master corbinace's Avatar
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    Click image for larger version. 

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    A couple more pictures.

  7. #7
    Boolit Master
    merlin101's Avatar
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    I'm going to guess some kind of Go-No go gauge.
    It's not the years in your life that count. It's the life in your years (Abe Lincoln)

    "A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.” George Washington

  8. #8
    Boolit Master
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    Quote Originally Posted by merlin101 View Post
    I'm going to guess some kind of Go-No go gauge.
    That would be my guess as well. Used a lot of them in my last job checking certain jet engine parts.

  9. #9
    Boolit Master corbinace's Avatar
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    These parts are made from aluminum and mounted on a cheesy plastic block with pins.

    The shoulder, or step, is very sharp.

    Definitely not a commercial application in my mind.

    The 6-7 one is the only one showing any signs of use, with some faint lengthwise scratching on the smaller diameter, like a go-nogo.

  10. #10
    Boolit Master
    CastingFool's Avatar
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    Homemade chamber gauges?

  11. #11
    Boolit Master

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    [COLOR="#EE82EE"]Gage for the carb jets on my last muscle car May be one of several things assembly pins or slave pins for some job. I don't believe gage pins or straighteners woukld be made from aluminum though. Maybe a check pin for an airgage set up. Or possibly a alighnment tools for a clutch or other stacked plate system.

  12. #12
    Boolit Master 15meter's Avatar
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    I sold thousands of pin gages/go-no go gages and setting masters for air gaging systems and they were always at a minimum hardened steel if not hard chromed for wear resistance.

  13. #13
    Boolit Master





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    Chamber length gauges be my guess

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check