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COVID-19 Update 3 June 2021: Online sales are OPEN, with orders being dispatched within two working days. Machines are being dispatched within five working days. Orders can be placed and paid for over the telephone for collection within a specified time. Viewing for machines by appointment only.
Our trade counter remains closed for general viewing. Please accept our apologies for any inconvenience caused.

Dial Bore Gauges

For accurate measurement of bore diameter, taper and ovality.

The measurement is taken by 2 hardened steel anvils (1 fixed, 1 movable) which are automatically centred in the bore by a separate spring loaded guide.

The movable anvil is connected to a push rod inside the body of the instrument which operates a dial gauge at the opposite end.

A set of different length anvils and in some cases, extension tubes, enable a wide range of bore diameters to be measured.

The instrument must be calibrated to a known dimension before use; e.g. with an outside micrometer, setting ring etc.

Dial Bore Gauge - close-up