The Dial Indicator

We tackled about the Dial Indicator in our Machine Shop with our teacher first engineer Cabatan replacing his former classmate Sir Bong Sanchez. These dial indicators are instruments used to accurately measure a small distance. They may also be known as a Dial gauge, Dial Test Indicator (DTI), or as a "clock". They are named so because the measurement results are displayed in a magnified way by means of a dial.
Dial indicators may be used to check the variation in tolerance during the inspection process of a machined part, measure the deflection of a beam or ring under laboratory conditions, as well as many other situations where a small measurement needs to be registered or indicated. The definition of small depends on the observer however a range between 1 mm (0.040") and 50 mm (2") may be thought of as typical with a travel of 10 mm (approx 0.5") being perhaps the most common.