Dualscale wheel rim ruler with inch and metric measurements for accurate, easy use. Key features Dualscale measurement shows both inch and metric sizes for quick, accurate readings. PCD gauge built from ABS hard plastic; strong, durable, and longlasting with good resistance to breakage. Compatible with most 4, 5, 6, and 8 lug wheels; an essential tool for tire and wheel shops, car dealers, and DIY wheel changers. Versatile design can measure a wheel directly or be flipped to measure studs on a vehicle; quickly identifies common 4, 5, 6, 8 lug bolt patterns. Use scenarios In a tire or wheel , quickly verify wheel bolt pattern before mounting or ordering rims to save time and prevent mismatches. At a car dealership, check wheel compatibility during inventory inspections or service work to ensure correct fitment for vehicles on lot. For DIY wheel enthusiasts, measure bolt patterns at home before rims to ensure proper fit and avoid returns.