Picked up a very nice digital caliper

Discussion in 'Spare Parts, Tools & Product Developement' started by loquin, May 17, 2009.

  1. loquin

    loquin Active Member

    at Parts Express. .001 inch/.03mm accuracy, seems to be well made (stainless steel construction, includes a hard-shell foam lined storage case & spare battery.) $14.90, good through the end of June.

    If you end up needing it when you order, (to get the sale price,) the catalog source code is 9CI.


    For what it's worth, I've ordered several times from this company, & have never had any problems.

    BTW - this unit also has a serial port on it. Apparently, you can order the cable & software, & hook it up to your PC for automated data logging.
    Last edited: May 17, 2009

  2. Junster

    Junster Member

    It'll do inches and mm's in digital? Very cool thanks Loquin
  3. kitcarguy

    kitcarguy Member

    I gave a bunch of them away about a year ago after I left the jewelry industry
  4. HoughMade

    HoughMade Guest

    That looks like what I just got from HF for about the same price.
  5. loquin

    loquin Active Member

    There's a lot of 'em out there. I looked at the HF online manual - it didn't say anything about the data port. Other than that, they look very much the same.
  6. HoughMade

    HoughMade Guest

    That would be a great advantage for many...not for me, but for me, anything better than a grade school wood ruler is a step up. ;)
  7. All MBer's should have a caliper in thier toolbox!

    It's just as important as any other tool.

    I can take measurements of items I need at the shop, and then with calipers in hand go to the hardware store and be guaranteed that I'm getting exactly what I need.

  8. BoltsMissing

    BoltsMissing Active Member

    I got one of those about a month ago, on sale AUD$20.00.
    a must have tool
    I have misplaced the instructions, mine seems to be off on the digital readout.
    On the pic it's slide mark is on 10mm, but shows 9.86 on digital..., is there a way to calibrate ?

    Attached Files:

  9. ibdennyak

    ibdennyak Guest

    Did you push the "zero" button with it closed? That usually does it on mine.

  10. BoltsMissing

    BoltsMissing Active Member

    Yep, done all that, switch it on, push "zero", go to 10mm mark, and it's a different reading, 9.75
    press "zero" close it,-9.76
    press "zero" again, open to 10mm mark, and 9.96
    press Off and back On, out to 10mm and it's differant again, 9.81
    Never has been on exact 1.00 digital read-out.
    Still a good price if ya compare to similar..,

  11. blime81

    blime81 New Member

    Bolts Missing,
    Not saying that you might have gotten a bad one (it happens I'm sure) but lining it up to the line isn't gonna be perfect since the it's your eyeball vs a supposedly precision tool.

    I'd say you should try measuring and remeasuring an item like a feeler guage. You should be able to get the same reading every time if its working right. Also try to make sure you slide it open and closed nice and easy using the thumb rest. Pulling them open quickly can cause the wheel to slip and therefore be off.

    I don't have one of the digital ones, I use a Starret dial type. Wouldn't mind getting a digital one though, maybe a metric one too.

    Good luck
  12. BoltsMissing

    BoltsMissing Active Member

    Ok, I'll test with a feeler guage as you say,
    test 1 using the thickest guage; .035inch-.889mm
    100 % what the feeler guage says, it shows up on the guage.

    tested on the thinnest feeler guage-.0015inch -.038mm
    100% on inch and on metric it shows .004

    Thankyou, I will see the eye doctor and get a refund on my reading glasses.
  13. blime81

    blime81 New Member

    Bolt Missing,
    Glad I could help! Thanks for posting the results, I'll buy one for sure now that I know they really are "on".

    Sounds like that's a good piece of gear for $20, does inches and metric.... Nice!
  14. loquin

    loquin Active Member

    BTW. Today I was talking to the supervisor at the calibration lab at work - he said to stop by with the caliper I bought & he would check the calibration on it. I'll try to remember to bring it in tomorrow. When I find out, I'll post the results.
  15. loquin

    loquin Active Member

    Follow-up: The supervisor at our Calibration Lab told me the caliper I bought met the quoted accuracy specs (0.001 inch / 0.03 mm) on a three-point check for the inside, outside, and hole depth measurements.
    Last edited: Jun 3, 2009
  16. motorhedfred

    motorhedfred New Member

    Wow, that one looks very similar to one we sell at summit Racing equipment. Ours retail for $32.95 though....:(
  17. Turtle Tedd

    Turtle Tedd Member

    the best calipers you can buy are the dial calipers .. not digital...no battery..close the jaws set the dial to zero..an accurate reading every time
  18. loquin

    loquin Active Member

    Dial calipers are good. And, they don't need batteries. However, in a production environment, where you're copying readings into a log of some sort, especially in a high-volume environment, where you may be making a reading every few moments, dial calipers have a higher operator error rate when reading, than does a digital caliper.

    Digital calipers also offer direct feed of the readings into a computer, for statistical process control, and, you can zero at a a non-zero value, (what the standard measurement should be,) and then directly read the difference between the standard, and your part. Again, less error prone in a high-volume environment.
  19. Reid

    Reid Member

    I like 'em all. Great grandads had to do with go-no-go calipers and small hole gauges (expanding, split balls, still very good) and with vernier calipers of various size ranges. All quite good.

    Really good vernier calipers of even the digital kind resolve down to fractions of a thousandth.

    Go-no-go (shim metal) is a great way to home-test ones dial caliper.
    Got my first one, dial, mechanical, hardened steel, round dial, for the rather high price for me, then of $25, back about 1975. Used it to gauge piano wire, mostly, for my job. Later got a genuine Starret of the same format.
    It was just as good and no better. Later got a Starret digital for a bill and a half or whatever they cost about twenty years ago. Works fine, but...it has seen a lot of shop use.

    I like the "General" model 147 from Home Depot, cost a whopping $25 or so in today's dollars. Seems accurate enough for my needs. Easier to read than the dial-types, and today, the LCDs are larger than they were many years ago. That helps. The inside and outside measurement functions on all of these are helpful. The "General" may not even be as "good" as the one featured on the opening page, but so far (out one year old now), it seems like all I need. It does eat batteries even when "off"; the auto off function does not stop all battery drain. It has no data port, but I don't need that.

    Bottom line: dial calipers of any sort are a great convenience.
    Really good ones, used carefully, resolve to half of a thou.
    A good vernier hand caliper resolves to...what? About one ten thousandth.
    Not many of us need that much accuracy, but they can be handy too for repetitious measurements of culling parts in a 'go-no-go' situation.

    Lots of good tools out there today for very little money, compared against the old Starret-only days, when any of these tools cost the equivalent of hundreds of dollars, for about the same sort of quality.

    Have a Starrett cylinder bore dial indicating gage, mechanical, about unused,
    about twenty years old, cost new: something like five bills. Have almost no use for it today. It is meant for measuring cylinder wall taper, in particular.
    Starrett rulz, I guess, but you pay for what you get, that's for sure!

    These new crops of cheap, but precision Chinese calipers offer much better function for the money than what we could get years ago.
    It's a golden era now, for the home tool buyer. Chinese is no longer necessarily "cheesey" at all. And the price can't be beat, right!
  20. Reid

    Reid Member

    The topic of measurements of small clearances is a fascinating topic.

    A quick note: as a piano technician, now retired, I used the handy dial caliper to gauge piano wire sizes. One thousand of an inch was plenty-fine resolution.

    But what of the piano action's many "hinged" parts? German silver alloy pins rotating, without ever wearing, in densely woven cloth "bearings" which we call bushings.

    The PRECISION of their fit is so important, that we cannot use any tool but for human feel/sense, by which to get the fit of a new pin right in a new bushing.

    It is done by feel. The resolution of "feel" (is the pin too big, or the bushing too tight or "fluffy", can be felt, to the ten thousandth of an inch,

    NO tools needed, but for educated fingers.

    Enough of me. I talk too much. But you, too, with strips of shim stock
    and feel, can tell if a piston is too tight or too loose. Taper in a worn bore can be similarly felt, or you can obtain a cyliner bore taper-gauge, etc.

    The old time mechanics made their huge steam engine parts using lathes,
    chipping chisels, the file, and feel. Their engines often ran for a century or more without wear-out of any key parts.

    But, today, for our small jobs, nothing seems to beat the "I want to check this", versatility of the dial indicating sort of slide caliper. So easy to use,
    compared with its vernier-scale predecessors.

    over. thanks. I opine toooo much!

    Call me "ten thousandth-by-feel, reid",
    or "big mouth: 2.2342" to be exact. :jester: