Anscott Directory

[drose@microcity.com]

In a recent post someone mentioned the Anscott Directory--What is this?
As to humidity control and measurement accuracy--I tune for the local
concert hall in Regina, Sask. Canada. The building is not well
controlled humidity wise.  I have to complete my tunings an hour before
concerts because at that time outside air is imported into the hall for
cooling--humidity drop can be 15% in 15 minutes. The piano (a 1976
Steinway "D" with original wire) begins to react almost immediately. The
temperature doesn't go down because the stage lighting is on for two
hours before I begin tuning.

In regards to the mason & risch piano--It is from the 1950's but like
most pianos has had very few tunings.  The tuning community here is less
than careful about A440 so many instruments have been either "evened
off" or had "unisons only" done.  An example a Chang g-157 with
dampp-chaser about 10 years old -- Stabilized in 1991 at A-440. Owner
waited till fall of '94 for next tuning--Another tuner went in and
"harmonized"--I went yesterday and had to raise pitch between 40 and 73
cents.

My question is again--how much is humidity difference and how much is
other.  It is clear to me that in the case of the Chang where humidity
was controlled and the piano was stable in 1991 that pitch drop was due
to other factors.

I would also extend an invitation to all to come to the Canadian
Association of Piano Technicians National Convention to be held May 4,
5, & 6, 1995 in Edmonton Alberta.

My email address is drose@microcity.com  I am an RPT and have been
tuning for 20 years.  I use a psycodyne to take my humidity control
measurements