FLW is proud to represent Teledyne Hastings and offer inventory of all popular models of vacuum measure & control and gas mass flow instrumentation.​​​​ Their vacuum product line includes the original DV-4 and DV-6 thermocouple gauge tubes, along with other vacuum sensors used in combination with meters and controllers that cover a wide range of vacuum ​pressure from atmosphere to ultra-high ​​vacuum. The gas mass flow line of ​meters and controllers cover a broad range of flow rates from 5 sccm to 15,000 slm that includes a variety of flexible options for outputs, calibration, and fittings. ​Founded in 1944 as Hastings Instrument Company by Charles and Mary Hastings, the company boasts a long history of success. The late 1940's saw the introduction of thermocouple (TC) technology. This technology was the foundation for many early Hastings produced instruments such as air velocity indicators, thermal mass flow meters, stack emission monitors and, of course, the thermopile vacuum sensor. By 1964, Hastings Instruments had grown into one of the leading vacuum and thermal mass flow companies in America and in 1968 became part of Teledyne Incorporated.