Analog record Stylus in the Age of SP
We cannot help feeling a craftsmanship with a stylus in SP age. There are those a variety of wisdom filled.
10 years...
Phonograph
Analog record 
Analog record Principal of Cylinder Phonograph, Sound Groove and Stylus Tip
Though it was high-pitched and hysterical sound, they heard clear reproducing sound from the phonograph which resembles...
Analog record History of Stylus Tip and Gramophone Record
Adamand Namiki started production of sapphire record stylus in the late 1940s, leveraging its gem processing technology...