Deagan Tone bar chime

[Tommy DOG]

Hello,

While searching the internet for information regarding something I
bought on Ebay I came across your post from a year ago.
I have the very same tuning device, or at least that is what it appears
to me to be.
I wonder whether you have found out any information about this thing
since you posted this question.

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From: Mike and Jane Spalding <mjbkspal@execpc.com>
To: <pianotech@ptg.org>
Sent: Sunday, August 19, 2001 11:19 PM
Subject: Old tuning forks, pitch standards

List,

Today an older gentleman at our church gave me 3 old tuning forks that
had belonged to his wifes uncle, a piano tuner.  I am curious to know
their approximate age, and also what, if anything, they tell us about
the history of pitch standards.

The largest, (and probably the youngest) fork is 125 mm overall
length, with tines about 5mm x 6mm.  It is stamped"DEAGAN  CHICAGO",
"A=440", "OFFICIAL PITCH A.F. OF M. 1917", and "ADOPTED BY U.S. GOVT.
1920".
******************************************************************

Any information regarding a date or period of manufacture, the items
name, anything at all would be appreciated.

Thank you very much,

TDP