Historical information
Research and Training
Physical description
Plotting Rule, W.H. Harling, single-sided, wood with brass sighting pieces at each end. In leather pouch, wood / metal / leather, WH Harling, London, 1919. The end pieces that lift to 90 degrees and act as sighting elements are bolted by four bolts each. Map reading scales are marked on each bevelled edge of the rule
Inscriptions & markings
W.H. Harling, London, 1919, No. 8047. Leather Pouch : JAS DAWSON & SONL 1918. 002