Insize 2921 Rotary Bore Gauge

Insize 2921 Rotary Bore Gauge

The Insize 2921 Rotary Bore Gauge is designed to measure bore diameters where the opening is too small for a standard fixed-anvil gauge to pass through. Its rotary anvil rotates to a compact profile for insertion, then extends to full measuring position once inside the bore, allowing accurate diameter checks on bores with restricted access. Available in ranges such as 80-150mm (2921-150) and 3.2"-5.9" (2921-E150), the gauge is built for mechanical operation with a steel anvil contact and is designed to work with a dial indicator or dial comparator to complete the readout. This makes the 2921 series a strong fit for aerospace, automotive, and general manufacturing applications where bore access is limited but measurement accuracy still needs to meet demanding tolerances.

Key Features

• Rotary anvil design allows the gauge to pass through small bore openings and expand for measurement
• Delivers 2µm accuracy and 1µm repeatability (without dial indicator)
• Compatible with 0.01mm or 0.001mm graduation dial indicators, or a dial comparator
• Works with Insize setting rings (code 6312) for accurate calibration before use
• Steel anvil contact point built for durability in industrial environments
• Available in multiple ranges to fit a variety of restricted-access bore applications

Specifications

Items Included

• Insize rotary bore gauge in the selected range
• Fitted storage/carrying case
• Instruction manual

Insize 2921 Rotary Bore Gauge Data Sheet