Kit primarily comprised of a carpenter's level and also containing an electric laser line generator, graduated rulers, namely, grade poles, and graduation checkers, namely, calibration frames; tracking equipment, namely, electronic apparatus used for transmitting and receiving sounds and images to enable accurate underground guided earth boring

'accur':43 'also':10 'apparatus':32 'bore':47 'calibr':26 'carpent':6 'checker':24 'compris':3 'contain':11 'earth':46 'electr':13 'electron':31 'enabl':42 'equip':29 'frame':27 'generat':16 'grade':20 'graduat':17,23 'guid':45 'imag':40 'kit':1 'laser':14 'level':8 'line':15 'name':19,25,30 'pole':21 'primarili':2 'receiv':37 'ruler':18 'sound':38 'track':28 'transmit':35 'underground':44 'use':33

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