The PET-304 by Oppama is a compact digital combination tachometer/hour meter designed for use on single cylinder, 2 or 4-cycle gas engines. Can be used non-contact (wireless) or wired with the included clip-on lead. Measures RPM from 100-20,000 with +/- 10 RPM accuracy, with a 0.5 second refresh rate, measures running hours up to 10,000 hours. Other specifications: 20,000 running hour battery life (non-replaceable), weight: 1 ounce, dimensions: 1.6" x 2.3" x 0.5" Made in Japan by Oppama, Echo branded
This tach seems to be of great quality. The size is compact but still easy to read. The refresh rate is fast. I don’t have another tach to compare the accuracy but it seems to be accurate. I almost didn’t buy it due to lack of max recall but for my uses it doesn’t make a difference. I would definitely purchase again.
Just purchased this tach to replace a slow response one from another company. The refresh Rate is what I was after. It’s fast enough to keep up with the saws I use. Keep in mind now having to have wires along to make it work is worth every penny!