microscopes; binoculars; rifle scopes telescopic; spotting scopes; periscopes; telescopes; tripods for telescopes; optical devices, namely, eye pieces for helmet mounted displays; protective eye pieces; optical lenses; prisms for optics purposes; optical filters; scientific and technical apparatus, namely, optical mirrors; planetariums; level measuring machines for surveying; range finders for cameras; electronic spectrophotometer for use in identifying and measuring colors; interferometers; refractometers; colorimeters

'apparatus':36 'binocular':2 'camera':49 'color':58 'colorimet':61 'devic':14 'display':21 'electron':50 'eye':16,23 'filter':32 'finder':47 'helmet':19 'identifi':55 'interferomet':59 'lens':26 'level':41 'machin':43 'measur':42,57 'microscop':1 'mirror':39 'mount':20 'name':15,37 'optic':13,25,29,31,38 'periscop':8 'piec':17,24 'planetarium':40 'prism':27 'protect':22 'purpos':30 'rang':46 'refractomet':60 'rifl':3 'scientif':33 'scope':4,7 'spectrophotomet':51 'spot':6 'survey':45 'technic':35 'telescop':5,9,12 'tripod':10 'use':53

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