I have been doing some research and a Japanese company called Oppama makes the "Pulse Engine Tachometer" and they have several different models. Echo is a distributor of them as well. I've seen some listed at various lawn mower parts websites and I was wondering if any of you can get these any cheaper. I think the latest model may be a PET-2100DXR. Thanks for any help. PS. I already know about Tiny Tach's and ordered one the other day. The PET is a higher end tachometer that refreshes more often.