PugJesus@lemmy.worldM to HistoryPorn@lemmy.worldEnglish · 7 months agoTwo Imperial German sound locators for detecting airplanes, WW1, 1917lemmy.worldimagemessage-square19fedilinkarrow-up1251arrow-down12
arrow-up1249arrow-down1imageTwo Imperial German sound locators for detecting airplanes, WW1, 1917lemmy.worldPugJesus@lemmy.worldM to HistoryPorn@lemmy.worldEnglish · 7 months agomessage-square19fedilink
minus-squareCethin@lemmy.ziplinkfedilinkEnglisharrow-up8·7 months agoI assume magnification to spot planes. Basically binoculars without the need to hold them.
I assume magnification to spot planes. Basically binoculars without the need to hold them.