User talk:2600:1700:1937:810:808A:196:F522:B7DD

British Standard Whitworth
This page (British Standard Whitworth) states that…"The standard tripod mount on all SLR cameras and, where fitted, on compact cameras, and therefore on all tripods and monopods, is 1/4 Inch Whitworth." That is NOT correct. The common tripod standard tap is, indeed, 1/4–20, but it's expressly machined in accordance with the inch-based Unified Thread Standard, NOT per the Whitworth standard. (There's a difference in the angle of the thread pitch.)