What is a Mercer gauge?
A precision gauge, based on the dial indicator, used for measuring cylinder bores for ovality and wear.
What are the types of dial indicator gauges?
Types of Dial Indicators:
- #1. Balanced Reading Dial Indicators.
- #2. Continuous Dial Indicator.
- #3. Reversed Balanced Dial Indicators.
- #4. Reversed Continuous Dial Indicators.
- #5. Plunger Dial Indicator.
- #6. Lever Dial Indicator.
What are the two types of commonly used dial indicators?
Indicator dials come in two basic formats: balanced and continuous. Whether to use one or the other is very often determined by the gage and the range of the indicator. However, in general, if the tolerances are bilateral, such as ± 0.001 inch, the balanced dial is preferred.
How do I reset my dial indicator?
Lock the dial indicator in place. Lower the dial indicator’s plunger until it rests on the top of the reference plane. Loosen the bezel’s locking knob if your indicator is a traditional model with a rotating face. Rotate the face of the indicator until the “0” marking aligns with the dial.
What is the difference of dial test indicator and gauge dial?
In general, the two tools are used in different applications: Test indicators are utilized for layout work on surface plates or aiding in part setup during the machining process while dial indicators are used for comparative measurements with gages and fixtures.
How accurate is a dial indicator?
The dial indication should be accurate to within + 1 graduation, at any point with 2.3 turns, i.e. the variation of the actual object size in relation to the setting master must be displayed by the pointer position on the dial with a maximum error of ± 1 graduation, at any position within 2.3 turns for effective …
Where were Mercer dial indicators made?
Mercer indicators were made in Switzerland. All models were discontinued in 2020. Except for the name on the dial they were the same as Compac indicators. Why go through the trouble trying to buy a dial indicator that is hardly ever available?
Are Mercer indicators still made in England?
The old-style Mercer indicators were made in England. Those are no longer available and can not be repaired due to obsolescence of parts, but you can substitute the new Swiss models with confidence. They are a dramatic improvement over the old ones.
What is the stem size of Mercer indicators?
Mercer indicators have 8 mm diameter stems and use 2.5 mm contact point threads. Stem sleeve adapters are available to make them fit 3/8″ fixtures. They are identical to Compac indicators, using the same stainless steel racks which give these a long useful life.
Are Compac and Mercer inch readings the same?
While Compac has discontinued most of its inch reading models, you can find the equivalent still available with the Mercer name. The tolerance markers are adjustable and could be removed if they get in the way.