the first rotary dial phone was invented on november 29, 1892.
the first rotary dial phone was invented on november 29, 1892.
when was the first rotary dial phone invented?
november 29 , 1892
bullet::::- the rotary dial is a device mounted on or in a telephone or switchboard that is designed to send electrical pulses, known as pulse dialing, corresponding to the number dialed. the early form of the rotary dial used lugs on a finger plate instead of holes. the rotary dial was invented by almon brown strowger in 1891. strowger filed u.s. patent#486,909 on december 21, 1891 that was later issued on november 29, 1892.









































1891 pastry fork
timeline of united states inventions (1890–1945)
rotary dial









































a rotary dial is a component of a telephone or a telephone switchboard that implements a signaling technology in telecommunications known as pulse dialing. it is used when initiating a telephone call to transmit the destination telephone number to a telephone exchange.









































on the rotary phone dial, the digits are arranged in a circular layout so that a finger wheel may be rotated with one finger from the position of each digit to a fixed stop position, implemented by the finger stop, which is a mechanical barrier to prevent further rotation.
rotary dial