Inside-diameter comparator (series) — precise comparative measurement for workpieces Key benefits Accurate internal diameter measurement: Uses a comparative method to deliver repeatable, high-resolution readings of workpiece bores. Reduced operator error: The self-centering guide/protective bridge ensures stable alignment with the bore, improving consistency between measurements. Flexible for multiple apertures: One end of the measuring head is a fixed active probe while the opposite end accepts interchangeable probes, allowing quick changeover to match the aperture being measured. Ready for shop use: Rugged construction and a compact footprint make the instrument practical for bench or floor-level inspection stations. Main features Function: Internal diameter measurement by comparative method. Design: Series-type inside-diameter indicator with a self-centering guidance/protection bridge that secures the instrument in the bore for precise measurement. Probes: Measuring head with one active probe and one interchangeable probe; change probes as needed to suit the aperture size. Weight: 1.72 kg — solid enough for stable measurement while remaining portable. How it solves common problems Eliminates misalignment errors: The guided, self-centering bridge positions the gauge consistently inside the bore so readings reflect the true diameter rather than operator positioning. Minimizes downtime for different parts: Interchangeable probes let you adapt quickly to different aperture sizes without changing instruments. Improves quality control: Comparative measurement provides precise differences from a master reference, making it easy to verify parts against tolerance limits. Typical applications Machining and tool rooms: Inspect internal diameters of turned or bored components during or after machining. Quality-control labs: Verify bores in components such as bushings, cylinders, and housings to confirm conformity with tolerances. Assembly and maintenance: Check internal clearances in hydraulic components, bearings, or other assembled parts where internal diameter accuracy is critical. Specifications (as provided) Measurement method: Comparative Probe configuration: One active probe; one interchangeable probe for variable apertures Guiding feature: Self-centering guide/protection bridge Weight: 1.72 kg What to expect A durable, shop-ready inside-diameter comparator that increases measurement consistency and adapts to multiple bore sizes via interchangeable probes. Ideal where reliable, repeatable internal diameter checks are required.