Mitutoyo Dial Bore Gauge Gauge Set, 3 Piece, 18-150 mm Range, High Accuracy, Model 511-921-20

Mitutoyo 511-921-20 Dial Bore Gauge Gauge Set is a three-piece precision gauge set designed for measuring bore diameters ranging from 18 mm to 150 mm with high accuracy. It features an improved carbide-ball contact point and anvil tip which provide superior abrasion resistance compared to steel balls and better surface finish than moulded carbide-tip types. This design enhancement reduces wear and increases durability over previous models.

The gauges have a wide measuring range and provide an accuracy of 2 µm (0.00008 inches), with repeatability of 0.5 µm (0.00002 inches) and an adjacent error of 1 µm (0.00004 inches), making them suitable for precise diameter measurement tasks. The hollow-structured grip minimizes the influence of heat from the operator’s hand, preserving measurement accuracy during use.

This set includes three interchangeable gauges with anvils to cover a broad diameter range and offers smooth, durable contacts supportive of demanding industrial environments. Applications of this gauge set span automotive manufacturing, machining operations, fabrication tasks, workshop measurements, and general manufacturing quality control.

Set of three dial bore gauges for a comprehensive measurement range. Carbide ball contact points for enhanced abrasion resistance and durability. High measurement accuracy and repeatability ensuring precise results. Interchangeable anvils for flexible use in different bore sizes.

Hollow-structured grip reduces heat interference from operator's hand.

This Mitutoyo dial bore gauge set is a reliable tool for engineering test and measurement requirements across industrial, automotive, and manufacturing sectors. It complies with RoHS standards and originates from Japan.

For more precision measuring tools, browse the bore Gauges category on EnvMart.