Bayanin samfur:
Babban injin yana da madaidaiciya biyu, skru guda biyu, da ƙaramin silinda. Wurin jujjuyawar yana sama da babban injin, kuma matsawa da kuma lanƙwasawa sarari gwajin yana tsakanin ƙananan katako na babban injin da benci na aiki. Kayan aikin auna ƙarfin yana ɗaukar babban nunin kristal na ruwa mai ƙima, kuma bayanan gwaji sun dace kuma suna da hankali.