Surveying instruments; Photo-electric detectors units; Meters, namely, digital multimeters; Testing apparatus and instruments, namely, earth resistance testers; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Dynamometers; Oscillographs; Anemometers

'air':32 'anemomet':39 'apparatus':13 'bacteria':31 'base':22 'detector':6 'digit':10 'dynamomet':37 'earth':17 'electr':5 'electron':21 'electronic-bas':20 'environment':26 'humid':29 'includ':28 'instrument':2,15,23 'measur':25 'meter':8 'mold':30 'multimet':11 'name':9,16 'oscillograph':38 'paramet':27 'photo':4 'photo-electr':3 'qualiti':33,36 'resist':18 'survey':1 'test':12 'tester':19 'unit':7 'water':35

PRETEK

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