A Glowgem Testometer is a device that Glowgem. The device is powered by the glowgem itself. A glowgem's strength corresponds to the amount of lit bars. Only strength is .the strength and of a
Flavors are more unreliable. Thefrom left to right: Dada, Sukkot, Rehab, Yonder, Water, Greet.
They were invented by Griffington.