A spanner’s use in tuning the *Madhura Mridanga*, a traditional Indian percussion instrument. The spanner plays a crucial role in adjusting the *mridanga*’s tension by loosening or tightening the stainless steel nuts that secure the heads of the instrument. This tuning process helps musicians achieve the right pitch and sound quality.

To clarify:
– **Spanner** (or wrench) in this context is specifically used for adjusting the tension of the drum heads by turning the nuts on the *mridanga*.
– **10mm size spanner**: A spanner of this size is commonly used for the bolts that are typically found on the *mridanga*, particularly those that secure the *pelli* or head of the instrument.

The tuning process is delicate and essential for musicians to get the desired sound from their *mridanga*, which is often used in classical Indian music and devotional performances. By adjusting the tension of the drum heads, musicians can control the pitch, tonal quality, and overall sound of the instrument.