Click to expand Tap to zoom Laser RPM Tachometer by ASIC Miner Parts Sale Sale $29.99 $29.99 - $29.99 Current price $29.99 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Spot bad fans easily with this laser RPM tachometer. Battery included.