9 Fluid Level Gauges Automatic Pneumatic Valves Mounted and Piped on a Steel Panel, Sold as a Unit; Test Units Comprising Hydraulic Pumps, Control Valves, Filters, Gauges, Tachometers, Flow Meters, and Table to Test Hydraulic Pumps, Motors, Valves and Cylinders, Sold as a Unit; Electric and Hydraulic Controls for Fluid Handling Systems-Namely, Pump Servocontroller, Monitor Panel, Electronic Limit Switch and Parts Therefor