AO Scientific Instruments History
AO's 1956 Electronic Automatic
Focusing Lensometer
Note "Lensometer" was an AO Trademark name
Download
this complete 1956 AAO document (pdf file)
Don Whitney, Bob Haynes and Roy Gunter worked on the design/electronics
of this device
May
2009 Lensometer Display (courtesy of the Optical Heritage Museum)
at the Southbridge Hotel and Conference Center