The oscillation parts on the earlier Northwind are only interchangeable on the 9" 45 oscillating models. I am guilty of cannibalization of early Northwind oscillation parts, George. It is a cross I have had to bear for years.
I have a couple of 32v dc only Northwinds and an original 32v dc Northwind wooden crate in the museum along with the complete line of every Northwind made on display there... It is a shame many "A" and "B" models were cannibalized for their ratchet oscillators to go on the 45's and 46's
geo...