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    Re: HR1 Sliderule locking mechanism questions
    From: Brad Morris
    Date: 2013 Feb 10, 09:52 -0800

    Hi Robin

    The pin B impinges upon another pin, which I shall call pin C. Pin C is threaded into the non-moving portion of the endcap. Pin B is also threaded. I did not attempt to turn either pin, as the locking screw resists my screwdriver with enough torque to make me fearful of breakage. Additionally, Pins B + C overlap by almost 1/4". There is not going to be any need for adjustment for some very long time to come.

    So, you ask, how do I know Pins B and C are threaded? There is a slot cut into the end of each pin, clearly for a tool to enter and turn the pin. To be sure, this tool must be some right angle arrangement with a very fine blade.

    I have linked some images, showing the pins in both the locked and unlocked orientations. If you look closely, you will see the slot in Pin B as well as the contact line right next to it where it contacts pin C


    On Feb 9, 2013 5:09 PM, "Robin Stuart" <robinstuart@earthlink.net> wrote:

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