Round Universal Hour Meter by Teleflex Teleflex 2 Round Universal Hour Meter. Uncluttered universal style complements any style of cockpit or engine compartment. Connects to ignition switch on 8-32 VDC positive or negative ground systems. Tracks engine operating hours for routine maintenance. 2-18 diameter cutout required. Mounting hardware instructions included. Waterproof face. California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Gau