Yes, there were 12" disks and special reproducers and styli to play them. The groove is extremely fine. The phono had to be dead level too, I believe. The 10/12 buttons activated a stop to the amount the horn would swing by means of a small arm attached to the top edge of the horn.
Ron L -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, February 23, 2012 11:33 AM To: [email protected] Subject: [Phono-L] 12-Inch Button on Edison Disk Machine? A friend has a Laboratory Model diamond disk player. To the left of the platter, along the edge close to the cabinet, are two push buttons -- one labeled "10" and the other "12." Neither of us was aware that there were 12-inch diamond disks. Were Edison reproducers available for lateral records? Was this an after-market modification? Thanks, Chris _______________________________________________ Phono-L mailing list http://phono-l.org _______________________________________________ Phono-L mailing list http://phono-l.org

