Construction - Mark II manometers are economically prices, compact and 
available in both stationary and portable configurations. Portable stand is 
standard on Model 40, available as optional A-612 stand for Model 25. 
Construction is simple with virtually indestructible molded white styrene-
acrylonitrile housing, indicating tube and fluid wells, molded ABS knobs and 
zero adjust plunger, shock mounted glass level vial and leak proof "O" ring 
seals. Moderate overpressures are accommodated by an overflow tank incorporated 
in the Model 25. Greater protection is provided by float operated overflow 
traps in the Model 40. Scales are lithograph printed on aluminum and epoxy 
coated. 

Installation - Mark II manometers can be mounted on any vertical surface with 
the two mounting screws provided. A built-in spirit level simplifies leveling 
before mounting screws are tightened. Simply fill the reservoir, adjust fluid 
level to zero, connect the tubing, and the gage is ready for operation. 

Accessories - Included with each Mark II manometer are two tubing connectors 
for 1/8" pipe or sheet metal ducts, two mounting screws, ?oz. Bottle of 
indicating fluid, red and green pointer flags and complete instructions. The 
Model 25 also includes 8' of flexible double column plastic tubing. Portable 
operation of the Model 25 is made possible by the use of the optional A-612 
portable stand. A short piece of tubing can be slipped over the Model 25 
pressure connections to contain the gage oil in transit. The Model 40 contains 
two 4 ? lengths of clear plastic tubing, a plastic swing-out stand and leveling 
screw for portable operation. It also features convenient rapid shutoff 
pressure connections and integral overpressure safety traps. 


OEM Specials - All Dwyer Mark II molded plastic manometers can be supplied on 
OEM quantities with your name or special graphics and scales. 

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