What Is a Dial Bore Gage?
A dial bore gage is a precision instrument used to measure the internal diameter of holes. This tool is essential in various industries for ensuring accurate measurements.
Its operation is based on a measuring spindle, often referred to as a needle, that is inserted into a hole. This spindle is controlled by a spring mechanism. When inserted, the spring causes the spindle to extend and rotate. This rotation correlates to the hole’s diameter and is displayed on the gage’s scale, allowing for accurate reading.
Dial bore gages are widely used in manufacturing, construction, and automotive maintenance. They are crucial for tasks like verifying the precision of machined parts, measuring the diameter of pipes and assessing engine cylinder dimensions. Their key features include high accuracy for precise diameter measurements, compact and portable design, and versatility in measuring various hole sizes.