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  1. #1
    Join Date
    Apr 2009
    Location
    Kingswood
    Posts
    930

    Default Back-plunger DTI

    Watching YouTube videos, I see the occasional use of a DTI with the plunger at the back, coaxial with the pointer.

    This arrangement would be very convenient in some situations, but rarely seen in Australia.
    Not in any of the popular local catalogs.
    Mick Moyle in Sydney has quite a collection of old instrumentation, but has not seen one for many years,

    Anyone using them ?

    Associated with this is the use of an attachment that clamps to a regular DTI stem to detect movement at right angles.
    I could make one of these, but it would require some delicate machining.
    Perhaps someone can give me a hint on where to get one locally.

    Just curious,
    Keep well,
    John.

  2. #2
    Join Date
    Jul 2016
    Location
    Melbourne
    Age
    35
    Posts
    1,522

    Default

    The starrett 196b should be available somewhere in australia for sure that's the whole back plunge kit. Mitutoyo also make one but I don't think it's a whole kit.

    I think I have a spare ID attachment thing I'll have a look

    Sent from my SM-G973F using Tapatalk

  3. #3
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    I did find plenty on Ebay from about $100 inc postage, BUT they're in the USA.
    https://www.ebay.com/p/1401560766
    This set with attachments, for roughly AU$200.oo inc postage
    https://www.ebay.com.au/itm/Starrett...298a7:g:d58AAO

    Kryn
    To grow old is mandatory, growing up is optional.

  4. #4
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    1,225

    Default

    I have only ever used the for aligning couplings. that is one job they are really excellent for.

  5. #5
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Guys,

    Shedhappens did a wonderful job of sorting out a rear probe Kafer Indicator.

    https://metalworkforums.com/f303/t20...afer-indicator
    Best Regards:
    Baron J.

  6. #6
    Join Date
    Apr 2009
    Location
    Kingswood
    Posts
    930

    Default

    Thanks for the link to the Kafer, I missed it.
    That is the sort of thing that sparked my curiosity.

    John

  7. #7
    Join Date
    Apr 2012
    Location
    Healesville
    Posts
    2,129

    Default

    G/day John, I have one of those back plunger starett kits, the right angle do dar thing gets a bit of use also.
    I just posted a pic of the starett in another thread yesterday, here it is doing its thing.
    Attached Images Attached Images

  8. #8
    Join Date
    Dec 2013
    Age
    56
    Posts
    1,416

    Default

    I picked up a few from ebay probably 12 years ago. Some guy must have gone to a auction and picked up a heap of indicators and accessories as he's eBay listing where flooded with them at the time and they all went for $40 or less with postage, the attachments for even cheaper.

    Just keep an eye on eBay for them, they do come up but I haven't looked for years because I have to many indicators.
    Some years ago I think it was Stuart took out the most indicators at around 40 odd I think it was.
    Using Tapatalk

  9. #9
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Mitutoyo also did a Back plunger dial indicator kit like the Starrett.

    I believe the other item you are asking about is a Starrett 671 Universal Attachment.
    https://www.starrett.com/metrology/product-detail/671

    I don't recall ever seeing one locally. Though I guess a special order would get you one.

    I have both, they don't get used often, I find DTI's* do pretty much the same thing. But its nice to have options

    *as apposed to dial indicators


    Quote Originally Posted by Dave J View Post
    40 odd I think it was.
    Oh I remember when I only had 40 . But Matthew_g beat me with "about 70", if he stopped shopping I might give him a run for his money these days lol

  10. #10
    Join Date
    Dec 2013
    Age
    56
    Posts
    1,416

    Default

    Quote Originally Posted by Stustoys View Post
    Mitutoyo also did a Back plunger dial indicator kit like the Starrett.

    I believe the other item you are asking about is a Starrett 671 Universal Attachment.
    https://www.starrett.com/metrology/product-detail/671

    I don't recall ever seeing one locally. Though I guess a special order would get you one.

    I have both, they don't get used often, I find DTI's* do pretty much the same thing. But its nice to have options

    *as apposed to dial indicators



    Oh I remember when I only had 40 . But Matthew_g beat me with "about 70", if he stopped shopping I might give him a run for his money these days lol
    Ah you come out of the woodwork, lol.
    I have a few of another style with a rocker arm as well, will get a picture tomorrow.

    That one you posted would be easily made with with a mill, and a bit of hand finishing just for looks.
    Using Tapatalk

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