PAGE 40 — COMPAC DIAL INDICATOR

Roy Meyer



"We are open for business and prepared to repair your gages. Find out how. Thank you for your support."

Roy Meyer and team

Long Island Indicator Service

14 Sarah Drive

Hauppauge NY 11788 USA


Compac Dial Indicator

metric indicator with 8 mm stem diameter

These are the very best dial indicators available. The craftsmanship and accuracy of these Swiss-made gages are superior to all others, but you will be paying a premium for this quality.

  • stem diameter: 8 mm
  • contact point thread: M2.5

The spindles are made of cold rolled steel and, unlike any other indicator, the spindle will not wear down with use and the teeth will not bend. They have an exceptionally long useful life which makes an investment in these worthwhile. We are still repairing Compac dial indicators made in the 1960's.

Water proof models have rubber seals and gaskets, plus a rubber bellows at the end of the spindle. These indicators come with flat backs. If you need a lug back, it will have to be ordered separately.

These models are only rarely in stock in the U.S. and long delivery has to be expected. Sorry, we can not respond to inquiries from countries outside the U.S. at this time.

Repair service is still available from Long Island Indicator Service for most models.

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These Compac models do not have bezel locks. The bezel turns with sufficient friction that a lock is not needed.

Small dial Ø 40 mm

All of these small diameter models come with flat backs. Lug backs can be installed. Lug backs for the waterproof indicators are slightly different and may require gaskets. Please inquire if these are needed. Other kinds of backs are also available.

  • Total deviation: 14 µm
  • Maximum hysteresis: 3 µm
  • Repeatability: 3 µm

Many Swiss machines are outfitted with Compac waterproof dial indicators. For example, Compac type 354AE is used with Tschudin grinders, Compac type 355E with Norma grinders and Compac type 355AE is often found on Studer machines.

Optional lug backs: lug backs for Compac indicators

What is IP54?
  1. Protected against dust ingress.
  2. Protected from liquid spray from any direction.
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IP54 Waterproof indicators have a rubber sleeve on the spindle.

Model Dial Ø Range Graduations Dial Pricing and Availablitiy
Compac 355AE 40 mm .120" .0001" 0-5-10 IP54 and shockproof inquire
Compac 353 40 mm 5 mm 0.01 mm 0-25-50 shockproof inquire
Compac 353E 40 mm 5 mm 0.01 mm 0-25-50 IP54 and shockproof inquire
Compac 355 40 mm 3 mm 0.002 mm 0-10-20 shockproof inquire
Compac 355E 40 mm 3 mm 0.002 mm 0-10-20 IP54 and shockproof inquire
Compac 365S 40 mm ±0.08 mm 0.002 mm 8-0-8 shockproof inquire
Compac 367 40 mm 1 mm 0.001 mm 0-5-10 shockproof inquire
Compac 367E 40 mm 1 mm 0.001 mm 0-5-10 IP54 and shockproof inquire

Standard dial Ø 58 mm

These are the very best large diameter (58 mm) dial indicators available. The craftsmanship and accuracy of these Swiss-made gages are superior to all others, but you will be paying a premium for this quality. Repair service is still available from Long Island Indicator Service for most models.

Water proof models have rubber seals and gaskets, plus a rubber bellows at the end of the spindle. These indicators come with flat backs. If you need a lug back, it will have to be ordered separately.

  • Total deviation: 17 µm [for model 533S: 9 µm]
  • Repeatability: 3 µm
  • Maximum hysteresis: 3 µm
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512K is Compac's economy model. It does not have a shockproof mechanism and is designed to be discardable.

Model Dial Ø Range Graduations Dial Pricing and Availablitiy
Compac 512K 58 mm 10 mm 0.01 mm 0-50-100 Price US$
Compac 532 58 mm 10 mm 0.01 mm 0-50-100 shockproof inquire
Compac 532E 58 mm 10 mm 0.01 mm 0-50-100 IP54 and shockproof inquire
Compac 533S 58 mm ± 0.5 mm 0.01 mm 50-0-50 shockproof and short travel inquire
Compac 555 58 mm 5 mm 0.002 mm 0-10-20 shockproof inquire
Compac 555E 58 mm 5 mm 0.002 mm 0-10-20 IP54 and shockproof inquire
Compac 565S 58 mm ±0.08 mm 0.002 mm 8-0-8 shockproof inquire
Compac 556 58 mm 5 mm 0.001 mm 0-10-20 shockproof inquire
Compac 567 58 mm 1 mm 0.001 mm 0-5-10 shockproof inquire
Compac 556E 58 mm 5 mm 0.001 mm 0-10-20 IP54 and shockproof inquire
Compac 556G 82 mm 5 mm 0.001 mm 0-10-20 shockproof inquire

Large dial Ø 82 mm

These are the very best large diameter (82 mm) dial indicators available. The craftsmanship and accuracy of these Swiss-made gages are superior to all others, but you will be paying a premium for this quality. Repair service is still available from Long Island Indicator Service for most models.

These indicators come with flat backs. If you need a lug back, it will have to be ordered separately.

These models are only rarely in stock in the U.S. and long delivery has to be expected. Sorry, we can not respond to inquiries from countries outside the U.S. at this time.

  • Total deviation: 17 µm
  • Repeatability: 3 µm
  • Maximum hysteresis: 3 µm
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Model Dial Ø Range Graduations Dial Pricing and Availablitiy
Compac 556G 82 mm 5 mm 0.001 mm 0-10-20 shockproof inquire

Long Range

Favorites among serious manufacturers in Europe but rarely seen the U.S. If you are familiar with these and would like to order anew one, please contact us. Delivery is likely to take 6 weeks while we send for them from Switzerland.

  • Total deviation 712: 25 µm
  • Total deviation 722: 30 µm
  • Total deviation 732: 35 µm

Refer to the drawing and the following dimensions.

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Model Dial Ø Range Graduations Dial Pricing and Availablitiy
Compac 712 58 mm 30 mm 0.01 mm 0-50-100 shockproof inquire
Compac 722 58 mm 50 mm 0.01 mm 0-50-100 shockproof inquire
Compac 723 58 mm 100 mm 0.01 mm 0-50-100 shockproof inquire

Repair Service

We are an authorized repair service for Compac gages. Because we have all repair parts in stock, and 50 years of experience, these gages can be repaired in just a few days. They'll be rebuilt to meet the manufacturer's original specifications. Your satisfaction is guaranteed. For details, see page 30.

Repair parts and accessories including replacement rubber bellows are available. See our index for additional information on indicator calibration, "Do-it-yourself" repairs, etc.

Quick repair tip: the rubber bellows (gaskets on the spindle) can affect the indicator's ability to return to zero. If the hand slows down or even stops before it gets back to rest, check the bellows. Push the rubber up slightly so that there's no drag on the spindle. It's sort of like pushing the sleeve of your shirt up to the elbow. That trick can even work on brand new indicators. And, if you're not working in a misty or damp environment you may not need the bellows at all. It's okay to remove it.

Compac 355AE with rubber gasket

Waterproof models have rubber gaskets.

Discontinued models and their replacements

Most Compac inch-reading (Imperial) models have been discontinued, but they may still be available under the Mercer brand name. If your grinding machine came with one of these models you may want to buy the replacement, or you might consider switching to metric models shown above.

  • All 40 mm diameter inch models except 355AE
  • Compac 513AK replaced by Mercer #01426021
  • Compac 533A replaced by Mercer #01426021
  • Compac 533AB replaced by Mercer #01426021
  • Compac 533AE discontinued without replacement
  • Compac 533AG discontinued without replacement
  • Compac 533AGB discontinued without replacement
  • Compac 533AS discontinued without replacement
  • Compac 533ASB discontinued without replacement
  • Compac 555A discontinued without replacement
  • Compac 555AB discontinued without replacement
  • Compac 555AG discontinued without replacement
  • Compac 555AGB discontinued without replacement
  • Compac 556A discontinued without replacement
  • Compac 556AB discontinued without replacement
  • Compac 556AE discontinued without replacement
  • Compac 556AG discontinued without replacement
  • Compac 556AGB discontinued without replacement
  • Compac 567A discontinued without replacement
  • Compac 567AB discontinued without replacement
  • Compac 567AE discontinued without replacement
  • Compac 567AS discontinued without replacement
  • Compac 567ASB discontinued without replacement
  • Compac 567ASE discontinued without replacement
  • Compac 567S discontinued without replacement


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