Hi All,  I need some technical assistance for a customer with a Cable
Euphona made in 1916.

According to the letter he sent, the unit has an electrically driven
vacuum pump.  The rough diagram he sent of the tracker bar looks like a
Recordo design with five rectangular holes on each end beyond the
regular note holes.

If anyone knows the correct scale design for this unit, he would be
most grateful.  Also, it would make a nice addition to the MMD Archives
as I have not been able to find any information about the tracker scale
in any of my reference books or catalogs, not even Art Reblitz's fine
book.

Thank you for your help,

John A. Tuttle