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Thread: Lens thread-measuring Depth gauge-measuring pitch(gears) old APO-Ronars 360/480/9

  1. #1
    3D-Stereo-Aeropanoramas
    Join Date
    May 2004
    Posts
    186

    Lens thread-measuring Depth gauge-measuring pitch(gears) old APO-Ronars 360/480/9

    I am trying to find out how to use my new NFC depth-gauge.
    it was about the dimensions of front-thread for sunshade of 360/9 which somebody had given in photo.net.
    its M54.5mm x .05 he said. i verified 54.5mm, then checked pitch.
    http://www.schraubenfibel.de/unc_gewinde.html
    go to UNF
    48 PITCH/inch (german: gearheight/Ganghöhe): 0.529mm SO THE MENTIONED 0.5 is ok.
    -------------------------------------------
    480/9-1200g with filterholder-slit
    no front-thread.
    rear-lens-thread must be 72 x 1 since filter adapter 72 x0.75 does not match. and i measured 24 or 28 pitch/inch
    but is it M72? if M is mentioned then its mm right?M=Metric
    www.stereopan.org
    3DStereo-Aeropanorama-Jungfraujoch

  2. #2

    Join Date
    Dec 2001
    Location
    NJ
    Posts
    8,470

    Re: Lens thread-measuring Depth gauge-measuring pitch(gears) old APO-Ronars 360/480/9

    Maxb = a mm diameter across the threads, b threads/mm pitch

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