Marvin White wearing an indicator.[1]
An indicator is a small compass that leads a person towards a tremor. Marvin White was given an indicator by Director Wimple of the United States Seismological Bureau so that he would be lead to the source of a tremor that they were almost certain would be running east on Second Avenue, unless it was a false alarm, as many of the previous readings had been.[2]
Appearance[]
- Season 1: The Ultra Beam (1973)
References[]
- ↑ As seen in the Season 1 episode The Ultra Beam (1973).
- ↑ As seen in The Ultra Beam.