Randy O'Brien on mon 9 apr 07
I worked for Al Johnsen in 1987 in Davenport, CA and I recall seeing
the dial-a-glaze calculator in his office. I believe he was one of the
creators and it was one of the products he sold along with his
Scott Creek extruder and ceramic easel.
Randy
C. A. Sanger on mon 9 apr 07
Is anyone familiar with a circa 1970 handheld
device called a Dial-A-Glaze calculator? I got
one in ebay thinking to use it as memorabilia
wall art in the studio. It is a large rotary
dveice like the old round slide rules, has no-
longer-available raw materials keyed into it,
and is used to convert glaze recipe to
molecular formula, or vice versa. It has a
1970 copyright D. A. G. on it, produced by the
TAD Produccts Corp. in Massachusetts. I
imagine it got replaced by electronic pocket
calculators, and now we use computer programs.
I was hoping someone out there might know some
history, how accurate it was, was it used for
classrooms, whatever. I found it quite a
clever device. Thanks! C. A. Sanger Sparfish
Studio Herington, KS
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