This one doesnt look bad either and is 15 bucks cheaper...
http://www.baileysonline.com/itemdetail.asp?item=17122&catID=
I think I'd rather have the $65 tiny tach:
http://www.tinytach.com/tinytach/commercial.php
A note on those optical tachs like the eBay link Evanrude posted:
It's optical, so it needs to see the rotation. You've got to be able to point it at the clutch drum, and probably have to paint a reference line on the clutch.
If you're doing that, look at the online model airplane stores like towerhobbies.com, or send me a PM, I've got a few extra optical airplane tachs around here somewhere. I don't think they store the high reading, but I think they have a hold button on them.
This is the tach I've got.
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