An optical tool presetter is a precision machine tool used to measure and set the dimensions of cutting tools before they are mounted on a machine. It uses optical systems such as cameras or lenses to provide accurate measurements of tool length, diameter, and geometry. This ensures correct tool setup, reduces machine downtime, and improves machining accuracy in CNC and conventional machines.

A surface roughness gauge is a precision inspection instrument used to measure the texture and smoothness of a surface. It evaluates parameters such as roughness average (Ra), peak-to-valley height, and other surface irregularities. This instrument is widely used in manufacturing, machining, and quality control to ensure that surfaces meet specified standards for performance and finish.

A digital depth gauge is a precision measuring instrument used to measure the depth of holes, slots, grooves, and recesses with high accuracy. It features an electronic display that provides clear and instant readings, eliminating the need for manual scale interpretation. This tool is widely used in workshops, machining, and inspection applications for quick and reliable depth measurement.

A depth micrometer set is a precision measuring instrument used to measure the depth of holes, slots, grooves, and recesses with high accuracy. It consists of a micrometer head mounted on a flat base and interchangeable extension rods to cover a wide range of depths. This tool is widely used in machining, inspection, and quality control applications where precise depth measurement is essential.

An outside micrometer set is a precision measuring instrument used to measure external dimensions such as thickness, diameter, and width of components with high accuracy. The set includes multiple micrometers covering different measurement ranges, typically in increments (e.g., 0–25 mm, 25–50 mm, etc.). It is widely used in workshops, tool rooms, and quality control departments for precise external measurements.

An inside micrometer set is a precision measuring instrument used to measure internal dimensions such as the diameter of holes, bores, and cavities with high accuracy. It consists of a micrometer head along with interchangeable extension rods, allowing measurement over a wide range of sizes. This tool is widely used in machining, inspection, and quality control applications where precise internal measurements are required.

A thread micrometer is a precision measuring instrument specially designed to measure the effective diameter (pitch diameter) of screw threads. It differs from a standard micrometer by having interchangeable anvils and spindles shaped to fit thread profiles. This allows accurate measurement of thread dimensions, ensuring proper fit and function of threaded components in mechanical assemblies.

A gear pitch gauge is a precision measuring instrument used to determine the pitch of gear teeth. It consists of a set of thin blades, each marked with a specific pitch value, which correspond to different gear sizes. The tool helps identify the correct gear pitch by matching the blade profile with the gear teeth. It is widely used in gear manufacturing, inspection, and maintenance.

A gear tooth vernier caliper is a precision measuring instrument used to measure the thickness of gear teeth at the pitch line. It is specially designed with two scales—one for measuring chordal thickness and another for measuring the depth of the tooth. This tool is widely used in gear manufacturing, inspection, and maintenance to ensure accurate gear dimensions and proper meshing of gears.

A differential bearing puller is a specialized hand tool used to remove tightly fitted bearings from differential assemblies in automotive systems. It is designed to apply controlled pulling force to extract bearings without causing damage to the shaft, housing, or surrounding components. This tool is commonly used in vehicle repair and maintenance when servicing differentials and gear assemblies.