Draper Expert Bore Gauge Set, 50 - 160mm, 2753

Precisely measure internal bores, detect taper and ovality, and ensure machining or repair jobs meet exact tolerances — the Draper 02753 is built for the demanding work of machinists, engine builders, and workshop professionals.

Key Features & Benefits

• Excellent accuracy of 0.01 mm, giving confidence in even tight tolerance bores. 

• Measures bores in the 50 mm to 160 mm range — broad coverage for many engine cylinders, housings, and mechanical parts. 

• Ideal for detecting taper, out-of-roundness (ovality), or bore misalignment. 

• Supplied in a protective case — convenient for storage and safe transport.

What’s In the Set

• A 3 mm travel dial test indicator

• 55 mm extension bar

• 4 spacer rings sized 0.5, 1.0, 2.0, and 3.0 mm

• 12 measuring rods in lengths: 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, and 105 mm

Ideal Uses

• Engine cylinder bore inspections and rebuilds

• Checking bores in housings, bearings, sleeves, or cylinders

• Quality assurance, machining, and precision engineering

• Diagnosing wear (taper or ovality) in mechanical parts

*Product images are for illustrative purposes only and may differ from the actual product