Chapter-5 Dial Measurement

Plunger type Dial Gauge or Dial Indicator

The dial indicator or the Plunger dial gauge is one of the simplest and the most widely used mechanical comparator.

First of all the use of plunger dial gauge used to compare work-pieces against a master.

Least Count of Dial Indicator

Plunger Dial Gauge measurement limit is 10 mm with the least count of 0.01mm and 1mm with least count of 0.001 mm. likewise, another same comparator is Lever type.

coror cap and limit sticker of dial guage

It usually depends on the application, type of work, accuracy, and precision of work we like to measure.

As the above figure shows, the contact point moves upward and downward, with the movement of a pointer, the dial indicates movement in the required results.

Back Plunger Dial gauge
Back Plunger Dial gauge

probably this dial a delicate instrument as the slender spindle can be damaged easily.

The user should avoid sudden contact with the workpiece surface, over tightening of contact points, and side pressure.

Long Strip Dial Gauge

Some extra points regarding Plunger type Dial gauge

  • Dial gauge also available with a large diameter for easy reading.
  • If you want to measure back of the body use Back Plunger type dial indicator.
  • Digital type dial gauge is more accurate than Dial display.
  • Dial indicator comes with different contact point vary according to the application.

HeYou can change back cover on different situations.

A color cap and limit sticker may help to use a dial on a different purpose

Lever type Dial Gauge

Lever Dial Gauge also knew as Test Indicator. It used to measure sensitive contact.

Lever Dial gauge usually measure up to 0.80 mm. But some special type lever dial design for measurement up to 2 mm. 

lever dial gauge
test indicator

As the name suggests it contain lever type contact, As Plunger type contact in Plunger Dial Gauge. This is light in weight and also smaller than Plunger Dial Gauge.

What is Least count of Lever Dial Gauge(Test Indicator)?

The least count of Test Indicator(Lever dial gauge) is 0.01 mm with a range of 0.80 mm or up to 2 mm. But some special type of lever dial gauge has least count of 0.001mm with a range of 0 to 1 mm.

Above information is valid only for dial-type test indicator. If you are looking for more accuracy choose Digital type gauges.

Likewise Plunger Dial Gauge measurement limit is 10 mm with the least count of 0.01mm and 1mm with least count of 0.001 mm.

It usually depends on the application, type of work, accuracy, and precision of work we like to measure.

furthermore, the main problem with digital type is, they are very costly and subjected to high care and maintenance.

How do you calculate Test indicator’s reading?

Measurement by lever dial gauge is quite simple as plunger dial gauge. As the lever moves the mechanical indicator start traveling.indicator show relevant result with respect to lever movement.

parts of lever dial gauge

The user should avoid sudden contact with the workpiece surface, over tightening of contact points, and side pressure.

What is Lever Dial Gauge used for?

Lever dial gauge used to measure variations in height, flatness, or roundness. It usually combined with Digital height gauge or Vernier Height gauge to fix same measuring force.

Therefore lever dial widely used in manufacturing industries, laboratories and in workshops.

The main manufacturers of this gauge are Mahr, Mitutoyo, Baker etc which is known for its quality product.

Anything to ask? please replay below or Go to the Next Chapter

%d bloggers like this: