覗き眼鏡
覗眼鏡
irregular okurigana usage
のぞきめがね
noun (common) (futsuumeishi)
see: 覗き機関・のぞきからくり
peep show
device with lens mounted on a stand or in a box to view enlarged pictures
see: 箱眼鏡・はこめがね
water glass
hydroscope
box, etc. with glass bottom for viewing underwater
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