Current Usage
Nearly all current still cameras accept a 1/4" UNC thread in their tripod baseplate though the UNC is close enough to Whitworth that it will fit, and many motion picture cameras accept a 3/8" UNC and, again, the Whitworth is close enough to fit, while a 5/8" UNC thread is the accepted standard for tripod mounted land surveying equipment and, once again, the Whitworth will fit.
The Leica Thread-Mount used on rangefinder cameras and on many enlarging lenses is 1 17⁄32 inches by 26 turns-per-inch Whitworth, an artifact of this having been developed by a German company specializing in microscopes and thus equipped with tooling capable of handling threads in inches and in Whitworth.
5/32" Whitworth threads have been the standard Meccano thread for many years and it is still the thread in use by the French Meccano Company
Read more about this topic: British Standard Whitworth
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