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    Re: Bygrave and MHR-1 locking mechanism construction
    From: Brad Morris
    Date: 2009 Oct 1, 14:49 -0400

    There has been some discussion over how the MHR-1 tubes are constructed.
    Based upon inspection of the MHR-1 in my possession, it appears to be cast aluminium parts.
    They are probably post machined to obtain the appropriate dimensions and finishes.
    
    One thought for Gary.  If the parallax in pointer to surface is an issue, bend 
    the pointer.  Yes, I realize that is pretty dang obvious, but
    it will eliminate the parallax .  There will be no requirement on how 
    accurately the bend is performed, since the two pointers establish
    the relative placement of the two scales.  Even if the pointers are twisted, 
    the relative placement of the scales will still be maintained, albeit
    at a different position than some other Bygrave that does not have that twist in the pointers.
    
    
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