Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Results 1 to 10 of 10

Thread: Giant micrometer - GIF

  1. #1

  2. The Following 4 Users Say Thank You to Jon For This Useful Post:

    baja (12-06-2020), jimfols (12-05-2020), nova_robotics (12-05-2020), Tonyg (12-06-2020)

  3. #2
    Supporting Member jimfols's Avatar
    Join Date
    Sep 2015
    Location
    Ontario Calif USA
    Posts
    560
    Thanks
    1,414
    Thanked 324 Times in 176 Posts
    Recon what the resolution is, 0.500 inch?
    Jim

  4. #3
    Supporting Member McDesign's Avatar
    Join Date
    Sep 2016
    Posts
    245
    Thanks
    5
    Thanked 111 Times in 60 Posts

    McDesign's Tools
    Yeah - that can't really be called a "micro"meter - maybe just "meter".
    It's like the optical engineer I used to work beside, with a wooden yardstick he claimed was calibrated "in wavelengths of light".

    Forrest

  5. The Following User Says Thank You to McDesign For This Useful Post:

    nova_robotics (12-05-2020)

  6. #4
    Supporting Member jimfols's Avatar
    Join Date
    Sep 2015
    Location
    Ontario Calif USA
    Posts
    560
    Thanks
    1,414
    Thanked 324 Times in 176 Posts
    "in wavelengths of light"

    I would have had to ask the engineer 'what color'.
    Jim

  7. #5
    Supporting Member McDesign's Avatar
    Join Date
    Sep 2016
    Posts
    245
    Thanks
    5
    Thanked 111 Times in 60 Posts

    McDesign's Tools
    Ah - we worked with lighting LEDs, so 450 nM - "royal blue".

    All illumination LEDs actually make light at this wavelength, and are coated with phosphor to absorb some portion of this wavelength, and reradiate it at a variety of longer wavelengths, or colors. Our eye mixes all this together as various degrees of "white". There are a couple of boutique LED makers that use a 405 nM "pump" to get some more energy in the near UV area.


    He was a smarter guy (a couple Masters degrees as well), but I think I have more patents.

    That's better, right?

    Forrest

  8. The Following User Says Thank You to McDesign For This Useful Post:

    nova_robotics (12-05-2020)

  9. #6
    Supporting Member
    Join Date
    Oct 2016
    Posts
    564
    Thanks
    9
    Thanked 139 Times in 95 Posts

    old kodger's Tools
    Depending upon how "stiff" the arc framework is the resolution might be a lot less than .5". I wouldn't be surprised to find it down to nearer 10 or 20 thou.
    The problem is at what time of day he seems to be measuring steel, and the gi-crometer looks like aluminium coefficients of expansion would play havoc with that
    I suppose it could be made of titanium.

  10. #7
    Supporting Member Paul Alciatore's Avatar
    Join Date
    Mar 2014
    Location
    Beaumont, TX
    Posts
    224
    Thanks
    7
    Thanked 103 Times in 56 Posts

    Paul Alciatore's Tools
    Mechanical clocks (and electronic ones for that matter) can be compensated for temperature changes. Why couldn't the frame of a micrometer also be?
    Paul A.

  11. #8
    Supporting Member suther51's Avatar
    Join Date
    Jul 2016
    Posts
    358
    Thanks
    160
    Thanked 141 Times in 108 Posts
    It may have to.be calibrated often, perhaps multiple times a day. The extra long "dumb" anvil might play a part here as a way to efficiently calibrate. Just a guess

  12. #9
    Supporting Member
    Join Date
    Oct 2016
    Posts
    564
    Thanks
    9
    Thanked 139 Times in 95 Posts

    old kodger's Tools
    maybe even recalibrated before every use

  13. #10
    Jon
    Jon is offline Jon has agreed the Seller's Terms of Service
    Administrator
    Supporting Member
    Jon's Avatar
    Join Date
    Jan 2012
    Location
    Colorado, USA
    Posts
    19,847
    Thanks
    5,900
    Thanked 27,013 Times in 7,425 Posts
    Large measuring instruments. Westinghouse Electric Corporation. 1910.

    Fullsize image: https://s3-us-west-1.amazonaws.com/h...s_fullsize.jpg




    173 Best Homemade Tools eBook

  14. The Following User Says Thank You to Jon For This Useful Post:

    jimfols (12-08-2020)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

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
  •