Cole Parmer Flowmeter 0 to 65 mm.
Gilmont Model GF-1460 flowmeter, Barnant Gilmont Flowmeters for the accurate measure of air, gas and liquid flowrates. Accuracy is +/-5% or 2mm of scale length, whichever is greater. tube 41309 Please see the flowing link for more information
Cole Parmer Flowmeter System, Variable Area Rotameter, Multitube Flowmeter, 4 tube system with 3 tubes 2MFV, o to 150 mm, Max pressure 200 psig.