Disputatio:Murex ferreus
Problem : The picture shows a caltrop used by the U.S. O.S.S. The hollow spikes puncture self-sealing rubber tires. The hole in the center allows air to escape even if the other end of the tube is sealed by soft ground....
Problem : The picture shows a caltrop used by the U.S. O.S.S. The hollow spikes puncture self-sealing rubber tires. The hole in the center allows air to escape even if the other end of the tube is sealed by soft ground....