Underground tunnel detection 17
$65.00
Underground tunnel detection 17. Condition excellent. “Report on the perception of subterranean sounds and the plotting of subterranean work by sound”. Full title of this SCARCE manual printed in 1917. Details the use of the equipment
- Description
Description
Underground tunnel detection 17. Condition excellent. “Report on the perception of subterranean sounds and the plotting of subterranean work by sound”. Full title of this SCARCE manual printed in 1917. Details the use of the equipment shown in the manual for detecting tunneling. Also the Germans were well known for digging under you and blowing un several acres and hundreds of men.
This manual was NOT to go to the front line trenches and is also marked SECRET inside as well.
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