PAGE 196 — DIGITAL CALIPERS WITH SPC OUTPUT

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Mitutoyo Inch/Metric Digimatic Caliper

with SPC output

The quality of workmanship and the advances in electronics can't be beat by this Digimatic digital caliper with SPC output made in Japan. If you're working in a digital environment, then this gage is highly recommended.

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  • data hold unit (optional - see information below)
  • thumb roller (except 18" and larger models)
  • rectangular or round depth rod (rectangular shown above)
  • with Absolute Encoder
  • data send button
  • includes NIST traceable manufacturer's certificate of calibration
  • resolution .0005" (switchable to metric 0.01 mm)
  • accuracy: ±.001" for 6" and 8" models
  • accuracy: ±.0015" for 12" models
  • accuracy: ±.002" for 18" and 24" models
  • accuracy: ±.003" for 40" models
  • repeatability: .0005"
  • maximum response speed: unlimited
  • power: SR44 battery
  • battery life: 3.5 years under normal operation
  • detailed instructions included in multiple languages

To use the digital calipers for depth measurement, add a T-Bar depth base as shown on page 203.

Note: New modes are "fully compatible with existing Mitutoyo digimatic peripherals". This includes SPC cables, U-Wave wireless transitters, etc. [Mitutoyo sales literature]

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80" long connecting cable with USB Input Tool Direct 06ADV380C. USB Input Tool Direct does not require a separate Input Device. The cable can be connected directly between your calipers and your USB port for easy data transmission. This cable is also suitable for the older 500-171 models. ... check price and stock

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Avoid getting ripped off by imitation Mitutoyo gages. If you buy from Amazon, verify that it "ships from and [is] sold by Amazon.com" or buy your gages through an authorized Mitutoyo dealer, such as Long Island Indicator Service.

Range SPC output Depth rod Jaws Mitutoyo No. Price US$
4" (100 mm) SPC Ø .075" rod steel 500-170-30 check price and stock
6" (150 mm) SPC rectangular steel 500-171-30 check price and stock
6" (150 mm) SPC .075" Ø rod steel 500-178-30 inquire
6" (150 mm) SPC rectangular carbide OD jaws 500-174-30 check price and stock
6" (150 mm) SPC rectangular carbide OD & ID jaws 500-175-30 check price and stock
8" (200 mm) SPC rectangular steel 500-172-30 check price and stock
8" (200 mm) SPC rectangular carbide OD jaws 500-176-30 inquire
8" (200 mm) SPC rectangular carbide OD & ID jaws 500-177-30 check price and stock
12" (300 mm) SPC rectangular steel 500-173 inquire
12" (300 mm) SPC rectangular carbide OD jaws 500-167 inquire
12" (300 mm) SPC rectangular carbide OD & ID jaws 500-168 inquire
18" (450 mm) SPC rectangular steel 500-505-10 inquire
Installing the battery

The manufacturer includes a battery which must first be installed. Remove the battery cover (don't lose it!) and install the supplied battery with its positive side facing up. The manufacturer's battery may not have the full 3.5 years life expectancy. This might be because no one knows how long the batteries have been in storage. Mitutoyo is careful to point this out.

After installing the battery you will have to set the origin point on the calipers. If you don't, you're likely to see the "E" error display. Simply close the jaws and hold down the "origin" button for more than one second. The display will show 0.00 and you're ready to go.

The battery should be removed if the calipers will be in storage for more than 3 months. Replacement batteries and spare parts are available from obliging Mitutoyo distributors.

What is a data hold unit?

You may have to take readings in an awkward or out of reach place where you can't see the digital display. When you press the button on the data hold unit it will freeze the display on the caliper so that you can bring it closer to your eyes. Once you've seen the display you can opt to press the send button to send this data to your printer or computer. Then you can press the data hold button a second time to un-freeze the display. This hold unit plugs into the port on the digimatic caliper and only works on digital calipers which have SPC output. The data hold unit is not compatible with Mitutoyo waterproof models.

Comparison and absolute measurement

When the power is turned on, the digital calipers work just like normal dial calipers. When the jaws are closed, the reading is zero. Open the jaws and the display will give you the reading in .0005" graduations. Remember that the accuracy is only .001" so the display is somewhat misleading. Digital calipers are no more accurate than standard dial calipers.

You can set the zero at any point on the calipers in order to take comparison measurement. Open the jaws to the size you want, then press the yellow ABS button for less than a second. You'll see the letters INC displayed to tell you it's in comparison mode. (Who decided on these letter combinations?) To turn off the INC, you'll have to press the button for more than 2 seconds.

By the way, did you notice that the resolution (.0005") is higher than the accuracy (.001")? This is true of all digital calipers and most other digital gages as well. The resolution leads you to think that you'll be working with ±.0005" accuracy, but you're not. Don't be alarmed, just keep it in mind.

What's likely to go wrong?

An arbitrary value, or the letter "E" will appear in the display if the calipers have not had the origin set. See instructions above.

"ErrC" is displayed and the display is flickering when the scale surface is contaminated. That means it's dirty or wet with water. Clean the scale, dry it and apply a small amount of thin oil (low viscosity) in order to repel any future water contamination.

"E" at the end of the reading, such as 2.501E, means you've moved the slider too quickly. However, the reading is still correct. (So why do they tell you this?) Slow down a little, next time. It can't hurt.

"E" if caliper is stationary. Same as ErrC.

For more tips on care, calibration and usage of the Mitutoyo Digimatic caliper refer to our general discussion of calipers on page 11.


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Companion Reference Guide for Test Indicators
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