HC Deb 13 July 1917 vol 95 cc2284-5
25. Mr. LYNCH

asked the Under-Secretary of State for War whether a range-finder was in use during the air raid over London; and, if so, whether the guns were pointed according to its indications?


It is not considered advisable to give public information as to such details of the defences.


Is not the test of a range-finder its use in action? Has this range-finder any use? Is it a real range-finder or only a political toy?