1. #1
    I wondered if any one had tried photographing stuff to take measurment's?
    I just tried but best I could get from the pics I had taken was the image
    below, I should have picked a sharper image. The initial measurement was
    taken by scaling to the thread pitch, maybe I should have gone for diameter?


    Last edited by irving2008; 16-09-2010 at 09:42 PM. Reason: fixed image url

  2. what camera did you use? its obviously struggling with the closeups... and what is the purpose/goal?

  3. Apparently, camera thread are commonly 55 whitworth form even if of metric diameters and pitch.

    Bill

  4. #4
    Quote Originally Posted by irving2008 View Post
    what camera did you use? its obviously struggling with the closeups... and what is the purpose/goal?
    Probably my fault, the camera seems quite good at macro pic's.
    It's a Ricoh R6, was 60 quid at jessops so would expect it to be pretty good;-)
    I often want to check thread angles and radii, as well as other
    small stuff.

    I don't know why I put lens in the subject, nothing to do with measuring camera
    lens threads, those detaild are probably easy to get. Ah probably had lens on my mind
    as I was wondering about strapping the camera to a microscope;-)

    I will have to spend a bit of time and see if I can get a pic with better
    definition. I can get nice a nice sharp pic but it will be a lot smaller, those pics
    have the thread full width of the pic. The pic below is a cam follower, looks quite
    good when it's it filling a laptop screen. The screw thread though it is focusing on either
    the peaks or tha backgrounds. I also have pretty shaky hands.
    Last edited by irving2008; 17-09-2010 at 08:49 AM. Reason: removed missing link

  5. #5
    Quote Originally Posted by graffian View Post
    The pic below is a cam follower, looks quite
    good when it's it filling a laptop screen. The screw thread though it is focusing on either
    the peaks or tha backgrounds. I also have pretty shaky hands.

    Looks like a Velo cam follower, you can clearly see the custom lapping marks where they lapped them in on the corridor floor outside the canteen.

    Many happy ? hours spent at hall Green waiting for spares
    John S -

  6. #6
    Maybe get one of these...

    http://cgi.ebay.com/ws/eBayISAPI.dll...m=320408048052

    (That's not necessarily the cheapest one, just the first I found)

    I've got one and it's great for filming the milling machine as it'll stand pretty much anywhere on the machine!

  7. #7
    That was flogged to me as being in good usable condition, I never
    expected it to be good, but could see from his pics they had the original shape.
    I did comment to him that they were not usable, would destroy my nice new cam,
    I got a realy shitty reply asking what do you expect from old parts. I was originally going to Stellite
    them but if I reground them I could have them cased. But I managed to find a set of Stellited ones.

    I do have a tripod. I will try it.

  8. #8
    Camera threads for tripods are 1/4" x 20 Whitworth, I just got a whit bolt, sawn the head off and held the stud on a mag stand instead of a dial gauge.
    John S -

  9. #9
    Magnetics stands are good I guess, but I always seem to find I can rarely stick it in just the right spot!

  10. #10
    Quote Originally Posted by graffian View Post
    I wondered if any one had tried photographing stuff to take measurment's?
    I haven't, but I would suggest at the very least to take into account barrel distortion of a lens - otherwise the measured thread angles taken from a pic might be all screwed up - pardon the pun.
    Last edited by Vikash; 21-10-2010 at 02:31 PM.

Similar Threads

  1. Do you allow price check threads?
    By dynamis_dk in forum Marketplace Discussion
    Replies: 27
    Last Post: 16-04-2014, 10:07 PM
  2. what is required to cut threads on a cnc lathe/
    By swarf-boy in forum Lathes, Lathe Rebuilding & Conversions
    Replies: 1
    Last Post: 09-01-2014, 04:27 PM
  3. RFQ: Simple job cutting simple shapes out of camera lens cap
    By RockandGrohl in forum Projects, Jobs & Requests
    Replies: 15
    Last Post: 20-04-2013, 01:23 AM
  4. where are the Mach3 discussion threads located ??
    By John S in forum General Discussion
    Replies: 6
    Last Post: 01-08-2012, 01:26 PM
  5. RFQ: RFQ: Vintage Camera Parts
    By alanambrose in forum Projects, Jobs & Requests
    Replies: 5
    Last Post: 02-11-2009, 05:01 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •