Features 【Efficient Measuring Capability】 Telescopic Bore Gauge - measuring range : 8-150mm; Precision: ±0.1mm. This gauge facilitates swift inner diameter assessments within holes or grooves, in conjunction with a micrometer or vernier caliper. It includes an integral lock to maintain setting stability. Ideal for gauging hole depths or slot dimensions, this tool streamlines inspection processes. 【Premium Quality】 Our T-bore gauge embodies exceptional construction using premium materials to achieve heightened stiffness, superior resistance to wear, and extended service life. Depend on the steadfast performance and endurance of our telescopic bore gauge for all your precision measurement endeavours. 【Precision Self-Alignment】 The telescopic thread gauge is equipped with robustly attached double-action handles to its contacts, guaranteeing automatic self-alignment. The gauge's intelligent design negates the need for manual calibration, thus providing consistently accurate readings. 【Optimal Accuracy】 At the business end of our gauge, the contact plungers are fashioned from heat-treated steel with precisely rounded ends. Such attention to detail ensures flawless access, even in the most diminutive of apertures, and imparts reliable measurements void of obstruction. 【Consistent Measurement Pressure】 Thanks to the sustained spring tension within the inner diameter gauge, it exerts a uniform contact force during use. This feature ensures steady, trustworthy readings by removing fluctuations that might arise from variable pressure application, thus enhancing the repeatability of your measurements. Our T-bore gauge embodies exceptional construction using premium materials to achieve heightened stiffness, superior resistance to wear, and extended service life. Depend on the steadfast performance and endurance of our telescopic bore gauge for all your precision measurement endeavours. Features: Double action handles are rigidly attached to the contact plungers and are automatically self-centering.Assist in quick checking of holes, slots and recess up to 6 inch deep.The ends of both contact are head treated steel and precision ground to a radius allowing proper clearance on the smallest hole the gauge will enter.Constant spring tension delivers uniform contact pressure.Super quality, high rigidness, good wear resistance, durable in use. Specification: Condition: Brand new Material: Tool steel Color: Shown as picture Measuring Range: 8-150mm Accuracy: 0.1 Quantity: 6Pcs/Set (ABCDEF) Scope of Application: Telescopic spring piston in the hole (or groove), can conduct inner diameter detection, used with micrometer or caliper, with knurled locking device. Package List: 1 Set Telescopic Gauge (6pcs) Package List