Treysit Sirometer

[TimSR2]

Hey are you guys all hip to this bit of 19'th century high tech?  The Treysit Sirometer  http://www.treysit.com/6.html

It's a tachometer that works for just about anything.

Sold by Briggs and Stratton dealers as pn 19200. I heard about these years ago but just finally got one for myself.  It's amazing!  Versatile, low tech, accurate, and cheap.   

[LowGear]

$25 at Amazon.  Pretty neat.

http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=Treysit+Sirometer

Casey

[Frank S]

I haven't seen one of these or thought of them for that matter in years. Thanks for the link