Apparatus and instruments for recording or indicating pressure, temperature or speed, namely, thermowells, thermocouples and pressure transmitters; apparatus and instruments for measuring density and viscosity, namely, fast loop density skids and fast loop viscosity skids; apparatus and instruments for the measurement of physical, chemical or elemental material properties of solids, liquids and systems using electrical measuring techniques, namely, potentiostats, impedance interfaces, impedance analyzers and frequency response analyzers; flow meters, namely, flow nozzles and wedge flow meters; apparatus, instruments and meters for single phase or multi-phase flow measurement; sensors, measuring devices and instruments for the measurement of displacement or physical position; sensors, instruments or devices for the determination of dimensional accuracy of manufactured parts or assemblies, namely, displacement transducers and magnetostrictive displacement transducers; electronic or electrical apparatus for recording or transmitting values measured by means of any of the aforesaid goods, namely, digital network systems and linear differential variable transformer ('LDVT') signal conditioning devices and equipment; network cards; electronic interface devices for use with measuring devices and meters; parts or fittings for any of the aforesaid goods, namely, shielded general purpose interface bus ('GPIB') cables, USB-GPIB adaptors, and shielded bayonet Neill-Concelman ('BNC') connection cables; software for use with any of the aforesaid goods, namely, computer software used to collect,process and display measurement data