Magnum 6 Piece 5/16 to 6 Inch Telescopic Bore Gauge Set (1010)

Getting accurate inside measurements of cylinders and deep bores requires tools that hold their position perfectly. The Magnum 1010 6-Piece Telescopic Bore Gauge Set locks firmly in place, allowing for precise transfer to a micrometer. The spring-loaded plungers expand smoothly, ensuring a true feel when checking for out-of-round conditions in engine blocks or machined parts.

Features

• Self-centering plungers - expand evenly for quick alignment inside holes.
• Knurled locking nut - secures the reading tightly for transfer without slipping.
• Satin chrome finish - resists rust and cuts down on shop glare.

Common Shop Applications

• Measuring engine cylinder bore wear.
• Checking internal diameters of machined collars.
• Inspecting deep recesses for out-of-roundness.

Specifications

• Range: 5/16" to 6" (8 mm to 150 mm)
• Dimensions: 8 x 4 x 1" (203 x 101 x 25 mm)
• Weight: 0.5 lbs (0.22 kg)
• Supplier MPN: TG5166
• KMS Product Code: MAG-1010

Recommended Shop Add-Ons

• You'll also need: Outside Micrometer Set - measures the final locked dimension of the bore gauge.
• Our engine building experts suggest: Dial Caliper - handles rapid thickness verification outside of deep bores.

Frequently Asked Questions

• Do these give a direct reading? - No, you lock the plungers in the bore, withdraw the tool, and measure it with an outside micrometer.
• How do I ensure a true measurement? - Sweep the gauge back and forth slightly in the bore to find the exact center before locking the knurled nut.