Lowell Component Downbearing Gauge

David Love davidlovepianos at comcast.net
Thu May 3 16:06:10 MDT 2007


.018 (or six divisions) equals 1 degree

 

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com 

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Farrell
Sent: Thursday, May 03, 2007 2:59 PM
To: pianotech at ptg.org
Subject: Lowell Component Downbearing Gauge

 

Breaking news item: Lowell Component Downbearing Gauges are now available
from Pianotek.

 

I have a question regarding the instructions for measuring downbearing: 

 

"Multiply the number of divisions the bubble crossed by three and one has
the front or rear bearing, in thousandths."

 

My high school chemistry teacher would string the author of this gibberish
up by his/her thumbs. I can hear him now: "Where are your units? Without
units this means nothing!"

 

Thousandths of what? Inches I suppose. But what does that mean? So I have a
couple thousandths of an inch of downbearing - what does that tell me? I
don't have a backscale length. The only thing that means anything is an
angle. Angles are not measured in thousandths of an inch - it is not a
linear measurement. Are they trying to suggest a slope maybe - as in so-many
thousandths of an inch of vertical length per inch of horizontal length?

 

The author should get a job at NASA and send another rocket crashing into
Mars.....  ;-)

 

Terry Farrell
Farrell Piano

 

PS: Units - a little pet peeve of mine!

 

www.farrellpiano.com
terry at farrellpiano.com

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