A speedometer measures how fast you go, a radiometer measures the radiant flux of electromagnetic radiation, and the Thing-O-Meter measures everything else. Commonly seen as the Laugh-O-Meter or Applause-O-Meter, which is based on the Clap-O-Meter used in old game shows. There are thousands of variations, though-- Suck-O-Meter, Creep-O-Meter, Love-O-Meter, Sarcasm-O-Meter, basically Whatever-You-Want-O-Meter. They're usually not very reliable, as their indicators are prone to going off-scale or even breaking. They generally measure things on an Abstract Scale. Examples of Thing-O-Meter include: