The BORLETTI AC180L Bore Gauge is a high-precision instrument designed to check the ovality and taper of bores and bores. Thanks to its robust construction, ease of use, and high accuracy, it is an indispensable tool in mechanical and metrology applications.

The bore gauge is used in machine shops, quality control departments, metrology laboratories, and industrial production lines, where the dimensional accuracy of bores and bores must be verified. It is used both during the machining phase (for intermediate checks) and during final inspections of mechanical components.

It is used to verify the perfect roundness (ovality) and straightness (taper) of bores, essential elements for the correct mating of mechanical parts such as bushings, bearings, shafts, and gear seats.
Using a precision bore gauge like the BORLETTI allows you to ensure dimensional tolerances within design limits, prevent premature wear or abnormal vibrations in assembled components, and improve the overall quality of the finished product.

The instrument is ideal for quality control technicians, machine tool operators, metrologists, technical inspectors, and production or mechanical maintenance managers. It is suitable for both experienced professionals and workshop operators who require a practical, precise, and reliable tool for everyday measurements.

Use is simple and intuitive. After selecting the interchangeable extension according to the diameter to be measured, the measuring head is inserted into the hole. Thanks to the centering brackets, the bore gauge automatically centers itself on the diameter, allowing the dimensional deviation to be read using a dial gauge (not included). The measurement can be repeated at different points on the hole to check for ovality or taper.

Technical Specifications:

Measuring range: 50–180 mm

Maximum depth: 450 mm

Contact points: hardened chrome steel (62/64 HRC)

Shaft: chrome-plated with heat-insulated handle

Centering: automatic with steel brackets

Supplied in a wooden case for protection and transport

It ensures precise, rapid, and repeatable measurements. Its robust and durable construction makes it easy to use, even for non-specialized operators, and it is particularly suitable for industrial quality control that requires maximum reliability.