What is the main use of a dial test indicator?

A dial test indicator is primarily used to assess misalignment in mechanical components. This tool provides precise measurements of small distances and variations in height or alignment, making it essential in settings where accurate positioning is critical, such as in machining or assembly applications.

The functionality of a dial test indicator allows it to measure tiny deviations, which is crucial when ensuring that parts are aligned to specifications. For example, in a situation where two shafts need to be perfectly aligned, a dial test indicator can demonstrate any misalignment by measuring the runout as the shaft is rotated.

This instrument is favored in various maintenance and engineering tasks because it can highlight subtle discrepancies that might lead to mechanical failure. Thus, the primary role of a dial test indicator aligns well with the concept of assessing misalignment, which is its key application in ensuring the efficiency and longevity of machinery and mechanical systems.