Fill Kit Includes one 5 ml plastic transfer pipette and one pipe cleaner for correcting overfills. No messy drips or spills. The curved inclined-vertical tube of the Mark II 25 gage provides higher ranges with easy-read increments at low readings. The Dwyer Mark II 25 is... A-102 Red Gage Fluid. No messy drips or spills. Red Gage Fluid, .826 sp. gr. Dwyer A-102 4oz Bottle, Red Gage Oil-A-102 Dwyer Gauge Fluid Dwye A-102 Ed Gage Fluid. 4 Ounce Bottle With Fill KIT. Use Red Gage Fluid is the standard fluid for use in inclined manometers, D type vertical manometers and all Dwyer gages using red fluid. 1964 - 1972 Mustang Ignition Condenser - Autolite Twin Point Lets you easily fill wall-mounted Dwyer Mark II Manometers while still in place.