Features: Balls & balls measuring head jewels are made of
synthetic sapphire/ruby. They are largely used in heavily corrosive
environment and optical fiber communication because of its
anticorrosion, wearable and fine transmission characteristics.
Balls measuring head jewels are used as insulated measure head on
precise instruments. Material sapphire/ruby , natural agate, SiC,
ceramic, crystallite glass ,Si3N4 ,spinel, hard alloy etc.
