Review on 🔍 GODESON Tire Tread Depth Gauge for Motorcycle, Car, Truck, and Bus - Professional Dial Type Gauge for Easy Reading in 32nds by Ricky Mills

This $8 sensor is a great deal. I checked its accuracy with a known good vernier caliper and found it to be about 0.010 inch off - less than 1/64 inch (0.0156 inch). The sensor can resolve 1/10th of 1/32 inch or that is 0.003 inch. Repeatability is somewhat dependent on measurement technique, but if you are careful you can get repeat measurements within that 0.003 inch. There is one critical review that speaks of inaccuracies in soft tires; I've used this sensor on soft winter tires and it worked well compared to a caliper. I accidentally dropped the gauge from about 2 1/2 feet onto hard concrete. IT STILL WORKS GREAT, although the zero is a bit off now. Finally, you can remove the plastic plate from the gauge, gently apply some pressure to the needle (it slides along the shaft with little effort), and successfully set the needle to exactly zero. How much more do you want for $8?