Review on Tachometer Non Contact Automotive Speedometer ANNMETER by Brandon Addison

The price was very good and the product does what it promises. I found that Inneeded put black tape on my chuck and then some reflective tape on the black tape to get a good reading. I've also found that the reading doesn't appear accurate when the gauge is closer than 8 inches. With these two adjustments to how I used the sensor, it provided accurate readings.