Small bore gauges are specialized instruments designed for precise measurement of narrow cylindrical holes and tight bores. These gauges are engineered to provide reliable measurements for internal diameters that might be challenging to assess using other tools. Typically designed as expandable gauges, they can be inserted into small bores and then expanded to make contact with the bore walls, allowing for accurate diameter measurements. Small bore gauges are crucial in applications where space limitations or intricate designs demand intricate measurements, such as in microelectronics, medical device manufacturing, and precision machining. Their ability to deliver accurate readings within limited confines contributes to the maintenance of tight tolerances and the quality assurance of components, ensuring that even the smallest details meet exact specifications.