Photometers; Densitometers not for medical use; Electro-optical instruments for use in inspection and measurement of industrial components; Electronic ultrasound flaw detectors; Luminoflux meters; Metal hardness testing machines; Optical frequency metrology devices; Precision instruments for manipulation and positioning of microscopic objects; Screw-thread measuring machines and instruments; Surveying instruments; Tool measuring instruments; Ultrasonic thickness gauges; Vibration meters

'compon':19 'densitomet':2 'detector':23 'devic':33 'electro':8 'electro-opt':7 'electron':20 'flaw':22 'frequenc':31 'gaug':57 'hard':27 'industri':18 'inspect':14 'instrument':10,35,49,51,54 'luminoflux':24 'machin':29,47 'manipul':37 'measur':16,46,53 'medic':5 'metal':26 'meter':25,59 'metrolog':32 'microscop':41 'object':42 'optic':9,30 'photomet':1 'posit':39 'precis':34 'screw':44 'screw-thread':43 'survey':50 'test':28 'thick':56 'thread':45 'tool':52 'ultrason':55 'ultrasound':21 'use':6,12 'vibrat':58

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