• We are going to bet that as a kid, you had a View-Master. • This toy has been around for decades and is, more or less, a handheld stereoscope. • We never thought much aboutthe device’s inventionuntil we saw a recent video from [View Master Travels and Peter Dibble]. • It turns out that the principle of the whole thing was created by the well-known [Charles Wheatstone]. • However, it was piano repairman [William Gruber] who invented what we think of as the View-Master. • [Gruber] didn’t just work on normal pianos, but complex player pianos and, in particular, the pianos used to record player piano rolls.
Article Summaries:
- The View‑Master, a handheld stereoscope, traces its roots to Charles Wheatstone’s stereoscopic principle but was practically invented by piano repairman William Gruber in the 1930s. Gruber’s disk‑like format, using an odd number of image pairs to avoid eye‑misalignment, proved easy to mass‑produce. Initially marketed to adults for viewing distant sites, the device pivoted during World War II to military training, supplying 100,000 viewers and 6 million reels for aircraft and ship identification. Postwar, the company acquired Disney‑licensed rights, becoming a popular toy. Later ownership by GAF shifted focus to the toy market, but the View‑Master has largely faded into nostalgia despite continued production of about 1.5 billion reels.
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