There is no evidence this was ever manufactured, but in 1915 he filed for a patent for a binocular version of this same optometer, and called it the Ski-Optometer, so named for its usefulness in doing skiascopy. This was manufactured by Wm. F. Reimold of Philadelphia. It included a Stevens Phorometer for measuring phorias, and a disc of auxiliary spherical lenses on the back, giving it a range of -12.00 to +12.00. To extend the range, there were clips on the front of each eye hole for the insertion of hand held sphere or cylinder trial lenses, with a mechanism to rotate the axis with the thumb. It weighed 2 lb. 3 oz.