periscopes Definition

sextants, spyglass, binoculars, portholes, eyepieces, gismos, theodolite, blimps, propellers, altimeters, antennae, gimbals, davits, thingamajigs, radars, tachometers, cannons, searchlights, turrets, lunar excursion module, retroreflector, engineless, whirlybirds, lasers, sabots, submarines, lanternfish, eggbeaters, needlenose pliers, dirigibles, gatling gun, microscopes, submersible, windsock, monocles, awls, chitons, airships, batwing, hourglasses, gliders, trapezoids, lavaliere, celestial navigation, fantail, miniature, robots, blowgun, echo sounder, bombsight, spaceships, hawsers, capstan, chevrons, fishhooks, gyrocompass, shark repellent, telescope, piton, conning tower, zodiacs, torpedos, penlight, galvanometer, antiaircraft gun, battleships, zoetrope, binnacle, flattops, casements, scopes, bakelite, underwing, stud finder, goggles, nocks, flappy, peashooters, furling, artillerymen, contraptions, zeppelins, backstays, bathyscaph, gunwale, gunners, hypervelocity, electrostatic generator, treadles, peashooter, sylphs, parabolic reflector, nebulas, footrests, tachymeter, pillbox, doodads, hassock, armillary sphere, forecastle,