New York Times, February 15, 1954
Mars Clock in Debut
Device is Down to Earth -- It Can Be Used in Photo Work
The world's first inter-planetary timepiece was unveiled by the Hamilton Watch Company last night at the Waldorf-Astoria Hotel, and, oddly enough, it actually has an immediately practical scientific use. The clock simultaneously records the hour, day, month and year on Earth and Mars.
The invertor of the clock is Dr. I. M. Levitt, director of the Franklin Institute's Fels Planetarium in Philadelphia. The clock can be used, he explained, when making sequence photographs on Mars. A device for maesuring Martian time makes it possible to tell at what point each photograph was taken. The principles involved can be applied to timepieces geared to other planets, he said.
Other uses of the clock lie in interplanetary communication and timing in spave travel in twenty years or so. Dr. Levitt admitted that he did not forsee space travel before that time, and so, the first year that appears on the clock's face is 1970. The clock, which has a face sixteen inches across, has four systems of dials.