An add-on self-timer(delayed action device) for
an early '90s Konica disposable camera.

You wind up his right arm and push the trigger on his
back. Then he turns his left arm and after 10 seconds
his right hand fires the shutter.
The name means "Mr.Pusher".

ご存じの方へ
名前がうろ覚えなので正しい名前をご存じの方は
私までお知らせください。