I was looking at these a few years ago and forgot the name or company that made them. They were small enough were you could zip-tie the hour meter right on the spark plug wire. I just had my engine rebuilt and I want to purchase one asap to keep track and not have to rely on my Mychron. I remember the web site catering to all sorts of engines. It was showing pictures of them on ATV’s, Karts, Boats, etc. Anyone recall this company or something similar? I thought I saw a picture with TJ Koyen with one zip-tied on his engine.