石
せ
き
Meanings
1
counter for jewels in a watch
Technical counter used in watchmaking to count the number of jewels (bearing jewels) in a mechanical watch movement.
This watch is equipped with a 21-jewel automatic movement.
2
counter for transistors, diodes, etc. in an electronic product
Technical counter used in electronics to count discrete semiconductor components such as transistors or diodes in a device.
Early transistor radios commonly used a 6-transistor design.