(Variable Area Flowmeter) Our standard range of SDPE Flowmeters glass tubes, gives you a choice of inexpensive liquid & gas flow metering for the Laboratory and industrial processes. We manufacture flowmeter tubes to OEM Specification (Analyzer, metalizing, pharmaceutical etc.). These can be supplied unfinished i.e. ends ground square and or flame polished. On requirment, we can supply the moulding 'as cut' for your engineers to finish to suit your final application.