• Measures positive, negative and differential pressures.
• Combine the inherent accuracy of the simple "U" Tube with the durability of tough, long-lasting plastic construction.
• Basic U-gage.
• Dependable U-tube manometer that withstands hard use and provides accurate, high visibility readings.
• For use with water, mercury or red gage oil.
• For mercury filled manometers, a scale clamp bar, Dwyer® Part No. A-363 (available as an extra for Series 1221 - and standard on Series 1222) is recommended.
• One pair of carrying plugs and a pair of non-kink vinyl tube connectors are included with each manometer.
• Columns are of .375" O.D. flexible and shatter proof clear butyrate tubing.
• They are easily accessible for cleaning.
• Indicating tube is backed by white scale channel to provide maximum color contrast.
• Scales are extruded high impact polystyrene plastic, formed to hold columns in perfect alignment.
• Stark white scales have graduations and numbers silkscreen-printed in black for maximum legibility.
• You can choose from numerous models and features including over-pressure safety traps, in full scale ranges from 8" to 36" of water or mercury.
• All are suitable for total pressures to 100 psi - for determining velocity and static pressures, leakage, fan and blower efficiency, filter resistance, and gas pressures.
• Ideal wherever a portable, direct reading manometer is needed.
• Standard ranges and markings as shown, or special ranges, colors, logos and brand names for OEM quantity orders are available.
• Minor Divisions of 1/10" water column (or 2mm water column on metric units) are silkscreened in jet black on stark white scale for positive definition.
• Easy to read, even at a distance, they are acrylic coated for permanence.
• Comes with one 3/4 ounce bottle of fluorescein green color concentrate with special wetting agent for W/M models, or 3/4 ounce bottle of red gage oil for "D" units.

NOTE: 1 to 2 weeks delivery