For The Serious Performance Enthusiast, The 80Mm Sized St200 Clubman Tachometer Features The Unique, Extremely Rugged Stack Stepper-Motor Movement, With Digital Quartz Accuracy For Unparalleled Precision. Configurable For Most Engine Types Utilizing Standard And Magneto Style Ignitions, Stack Clubman Tachometers Come Standard With Peak Rpm Tell-Tale" Memory, And A Built In Shift-Light Activation Circuit. Stack Panel And Dash Mount Shift Lights Available Separately.