"Carefully, V'Naarik touched the de-energizer. Twice as carefully he released the tape into the actinium chamber. He watched anxiously as the beta rays sped unleashed to send the counter dials dancing. One thing he was sure of; that chamber was absolutely infallible, the latest product of the Empire laboratories. The error could not be there! Seconds tecked away. A hush fell as the register dropped steadily. V'Naarik leaned forward to look, and there it was -- potential .093."
From "Clansmen of Fear"
By Henry Hasse