A pair of massive 20x120mm Imperial Japanese Naval observation binoculars

A pair of massive 20x120mm Imperial Japanese Naval observation binoculars, aluminium, brass and steel, hooded objective lenses, inclined eyepieces adjustable for interpupillary distance and independently adjustable for focus, marked '20 x 3°', and with anchor stamps and other control marks; adapted for its modern aluminium adjustable tripod, length of binoculars 28 in. (71 cm), height on stand 52 in. (132 cm).