Hiram Percy Maxim and Clarence D. Tuska, An Interview with the Inventor of the Crystaloi Detector (1916)
“ The Crystaloi has a great advantage over other Detectors inasmuch as there are several fine, light metal points in contact with a sensitive mineral instead of the single point which most Detectors have. The Detector is so compactly made that it cannot get out of adjustment and it never loses it’s sensitiveness. ”
