First, then, the little creature going backwards, and working with its callipers, traced a circle on the surface of the sand.
"Popular Adventure Tales"
Mayne Reid
Whenever it encountered a stone, this was raised between its callipers and pitched out beyond the ring.
"Popular Adventure Tales"
Mayne Reid
Then the sharp callipers are closed upon the victim-all the moisture in his body is sucked out-and his remains, now a dry and shapeless mass, are rested for a moment upon the head of the destroyer, and then jerked far outside the pit!
"Popular Adventure Tales"
Mayne Reid