Joint tighteners found in many of the sets were employed in adjusting and maintaining the instruments. Even though it is often not possible to trace what each set was originally supposed to look like, ...

Shaped like a fish, tiger and box respectively, the muyu, yu, and zhu are percussion instruments that all fall under the wood classification.

There are three families of musical instruments - string, wind and percussion. When a string is plucked on an instrument such as a guitar, the vibration is passed into the air and you hear a sound.

There are two major types of SMU semiconductor metrology instruments: capacitance measurement units (CMU) and picoammeter units (PAU). Other types of semiconductor metrology instruments include: ...