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
Famous quotes containing the words current and/or usage:
“I perceived that to express those impressions, to write that essential book, which is the only true one, a great writer does not, in the current meaning of the word, invent it, but, since it exists already in each one of us, interprets it. The duty and the task of a writer are those of an interpreter.”
—Marcel Proust (1871–1922)
“I am using it [the word ‘perceive’] here in such a way that to say of an object that it is perceived does not entail saying that it exists in any sense at all. And this is a perfectly correct and familiar usage of the word.”
—A.J. (Alfred Jules)