- Unmatched Measurement Accuracy: This telescopic gauge set uses a reliable spring mechanism for smooth expansion and contraction, ensuring a precise fit within the bore. Ideal for machinists, it allows for accurate measurement of inner diameters in holes, slots, and recesses. - User-Friendly Design: The gauge set is designed for easy operation. Simply expand the T-shaped part inside the hole and measure the size with a micrometer or caliper for quick and efficient results. - Versatile 6-Piece Set: This collection features six telescopic gauges that cover a wide range of diameters: 5/16" to 1/2", 1/2" to 3/4", 3/4" to 1-1/4", 1-1/4" to 2-1/8", 2-1/8" to 3-1/2", and 3-1/2" to 6". This comprehensive range meets various measuring needs. - Superior Craftsmanship: Crafted with tool steel contact points that are meticulously ground to precise radii, this gauge set ensures durability and accuracy. The knurled handle provides a secure, non-slip grip for comfortable use. - Practical Applications: This gauge set is perfect for assessing the dimensions of machine parts, evaluating the fit of bushings, or verifying the depth of drilled holes. Whether in a workshop or a manufacturing setting, it is an essential tool for any machinist or technician. Experience precision and reliability with this telescopic gauge set, designed for professionals who demand accuracy in their measurements.