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Extech 407762 Sound Level Meter

CUSTAM SL-10S Mini Digital Sound Level Meter

EXTECH Digital pH Transmitter Model 402006 1984

EXTECH RH200W Wireless Thermometer,Digital LCD 453A37

Extech 365510 Digital Stopwatch w/ Neckstrap-Water Resistant- Large LCD display

Extech Instruments Model 380820 Software CD and User's Manual (C1)

Extech OYSTER Oyster Series Economy pH Meter Kit w/ Attachment & Case slope