Vacuum Gauge for Player Piano
By Eliyahu Shahar
[ Robbie Remarked in 150703 MMDigest:
>[ Player piano vacuum is measured in inches water column; 30 inches
>[ vacuum is pretty loud! The automotive vacuum gage reads to around
>[ 30 inches of mercury column, so it will barely move when connected
>[ to a player piano.
So that explains why my Duo-Art played so loudly when I set it to 30"
of mercury! <lol> Isn't the density ratio roughly times 13?
Eli Shahar
[ Yes; at room temperature the density of mercury is 13.6 times that
[ of water. Lead and steel will float upon mercury! -- Robbie
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(Message sent Sat 4 Jul 2015, 15:39:50 GMT, from time zone GMT-0700.) |
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