eyepiece, ophthalmoscope, magnification, refractor, colorimeter, magnifier, binocular microscope, stud finder, magnifying glass, fresnel lens, styli, fluoroscope, pentaprism, collimator, speculum, electroforming, nosepiece, fiducial, needlenose pliers, otoscope, vignetting, lens, galvanometer, watchband, penlight, spectroscope, colposcope, tonometry, goniometer, sconce, enlarger, octahedron, aligner, faceting, sulcus, toric lens, spyglass, serration, cloisonne, bevel, labret, radiograph, soleplate, countersink, dowsing rod, flashgun, diopter, stipple, fisheye, eyehole, waviness, cabochon, smoky quartz, photogram, inlay, capsulotomy, halftone, radiopacity, iris diaphragm, radiolucent, watchcase, viewfinder, collimation, sunblind, tomograph, scleral, thumbwheel, tesserae, shininess, scintillator, detents, anaglyphic, microelectrode, gemologist, borescope, striation, micrograph, shagreen, kerf, illuminator, plumb bob, zeiss, spectrophotometry, crystalline lens, checkering, convex lens, planarity, laparoscope, zirconia, nocks, burs, metalic, galvo, dodecahedron, aperture, spectro, translucency, aventurine, vernier, keratectomy, stereoscope, labradorite, microscope, microscopes, eyepieces, lenses, telescope, binoculars, gratings, magnifiers, shears, telescopes, abrasion, astigmatism, blower, carts, copiers, corset

hand glass, simple microscope

jeweler's loupe