[CAUT] Duplex angle

[johnsond]

I use a small piece of stiff wire about 3" long bent in one place off 
center at whatever you determine to be a good angle.  I've used 17 
degrees in the past, but whatever you prefer and depending on the 
section.  With action removed this piece of wire can be held with bend 
against the bar between unisons and one side along speaking length to 
compare your known angle with that existing on the piano.  Some simple 
adjustment to the gauge wire then, can also give you a fairly close 
measurement. 

good luck,

Dennis Johnson
St. Olaf College