This versatile, lightweight, and durable caliper kit will measure internal and external threads. As well as depth dimensions in both inches and millimeters with 0.01 mm accuracy. With a maximum range of 6 inches/150 mm, the calipers display results displays instantly on the large screen and can easily be reset to zero at any point. The complete kit includes: - Digital Caliper - For Measuring Inches & Millimetres - Angle Gauge - For NPSM (30°), BSP/JIS (30°), SAE (45°), JIC (37°), DIN 7631 (30°) & DIN 3902 (12/24°) - Ruler (Up to 6"/150mm) - 2 Thread Gauges (For JIC/UNO/ORFS/NPT & DIN METRIC/BSP) - Protective Storage Case with Foam Liner The kit also includes batteries and a mini screwdriver for easy battery replacement.