Autometer 5 inch Diesel 6000 RPM with Memory 4 Pulse Tachometer pedestal MountSince 1957, Autometer Has Set The Standard In Performance, Accuracy And Durability With Their Legendary Tachometers. The Absolute Pinnacle Of Engineering And Technology, Its No Wonder Autometer Can Lay Claim To More Motorsports Victories Than Every Other Gauge Manufacturer Combined. This Model Is Designed For The Specific Needs Of Competition Diesel Use, Featuring A Unique Sensor Engineered To Be Mounted Near The Crank Pulley Which Creates A Signal