Galvanometers; Steelyards; Lap-counting devices, namely, counters for use during sporting activities; Level measuring machines; Levelling rods; Measuring rulers; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Scientific measuring instruments, namely, conductivity meters; Surveying instruments; Tape measures

'activ':13 'adapt':38 'apparatus':22 'conduct':47 'count':5 'counter':8 'devic':6 'diopter':37 'dome':31 'galvanomet':1 'instrument':24,45,50 'lap':4 'lap-count':3 'lens':39 'level':14,17 'machin':16 'measur':15,19,44,52 'meter':48 'name':7,25,46 'optic':21,26 'photographi':30,35,42 'port':27,32 'rod':18 'ruler':20 'scientif':43 'sport':12 'steelyard':2 'survey':49 'tape':51 'underwat':29,34,41 'use':10 'wet':36

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Goods & Services