Edison factory blueprints show the 4 minute stylus as 3.5 mil conical.
On 12/18/15 8:15 PM, Overkill wrote:
> I have been wanting to build myself an Archeophone for playing the common Amberol type 4 Minute Cylinders. I want to use a moving magnet cartridge and I am looking for suggestions as to which cartridge and needle size is best suited to fit the grooves correctly??