- 0 - 8000 RPM scale - 2-5/8" dial face - 250 dial sweep - Black bezel - Internal dial lighting - Air core meter movement - Adjustable red line pointer - Works on 4 6 or 8 cylinder 12 volt negative ground engines - Functions with OEM electronic or breakerpoint C31 and most aftermarket ignition systems (not magnetos) - CP7558 Tach Adapter may be required for DIS systems - Includes mounting hardware - Also available in white face - User Manual (241K PDF format)