Hole and Cylinder Measure

Holes and cylinders are typically measured using various precision instruments and techniques. The choice of measurement method depends on factors such as the size of the hole or cylinder, the level of accuracy required, and the specific characteristics of the object being measured. Some instrument, such as a bore gauge or 3-point micrometer, read directly while others transfer a facsimile of a hole size (telescope gauge). Still other instruments gauge hole limits by comparison (gauge pins).

Three-Point Micrometer

A three-point micrometer, also known as a three-point inside micrometer or a three-point internal micrometer, is a precision measurement tool used to measure the inside diameter of cylindrical objects such as holes, bores, or pipes. It is an essential tool in various industries where accurate measurements of internal dimensions are required, such as manufacturing, engineering,...

Bore Gauge

A bore gauge, also known as a dial bore gauge, is a precision measuring instrument used to measure the inside diameter of cylindrical holes, bores, and cylinders. It is designed to accurately determine the internal dimensions of objects such as engine cylinders, pipes, bearings, and other machined or manufactured components with cylindrical openings. Using a...

Inside Hole Calipers

Inside hole calipers, also known as internal calipers or bore calipers, are precision measuring tools used to measure the internal dimensions of cylindrical holes, bores, and cavities. These calipers are designed specifically for measuring the inside diameter of objects such as pipes, cylinders, and other internally machined or manufactured components. Inside hole calipers typically consist...

Telescoping Bore Gauge

A telescoping bore gauge is used by placing the gauge within a bore, expanding the telescopic arms until they make contact with the bore walls, and then locking the arms into place at that specific dimension. Once locked, the gauge is removed from the bore and measured separately. This two-step process allows for more accurate...

Inside Micrometer

An inside micrometer, also referred to as an internal micrometer, is a precision measuring instrument designed for accurately gauging the internal diameter of cylindrical holes, bores, and cavities. Comprising a main frame, a measuring head, and a measuring spindle, the inside micrometer operates by inserting its measuring head into the bore to be measured. As...

Small Bore Gauge

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...

Coaxial Indicator

A coaxial indicator is a precision measurement tool used in machine shops and manufacturing settings to align a cylindrical feature, such as a workpiece or a machine spindle, with high accuracy. It helps ensure that the cylindrical feature is centered or coaxial with respect to the axis of rotation. Coaxial indicators are commonly used in...