THE DUKE'S CHAINSAW CHAIN
HARD CHROME, AGGRESSIVE
Professional style chain, with hardened, blued and chrome plated cutters.
Measurable engine
Battery life
Dimensions (L×W×H)
Main body weight
Other functions
2-Stroke 1-cylinder
4-Stroke 2-cylinder and 1-rotation 1-ignition
Approx. 20,000 hours
44*60*12.5(mm)
29g
hourmeter
Daily life waterproof
This is the simply designed tachometer without button, which automatically displays the cumulative accumulated time after the measurement of rotation frequency is terminated.
The maximum measurable speed is 20,000 r / min.
bought the PET_304 as I have 5 saws and 2 hearing aids=my hearing is less then 50% with Tinnitus so distinguishing tones very bad ... many can tune saws by ear, I cannot. I'd used several of the china-cheap tachs which all failed after 3-4 uses, so went with Echos suggested. I used the 304 about every month then in the 14th month I was adjusting a 590 and as I went to WOT I got a reading of 888888, that's it. It was beyond warranty so why not open it up and see what's what (see pix). I'd think there might be a way to remove the power - nope, Batts are tack welded in. Contacted Oppama, sent the pix would not suggest any solution... spend a bit more for one with a reset...
Works good
THE DUKE'S CHAINSAW CHAIN
HARD CHROME, AGGRESSIVE
Professional style chain, with hardened, blued and chrome plated cutters.