The name Pochette is given to the small violin carried by 18th Century dancing masters in order to demonstrate the tune to their young pupils. Also used by the sellers of sheet music to demonstrate their wares to dance halls, public houses and theatres.
Below is a close-up photo of my version of an antique Pochette
Conversion from OneString Fiddle.
This Pochette was originally a one string fiddle, and the photograph above shows it in the process of being converted into a Pochette or Kit Fiddle.
Photo of full pochette