Dwyer 250-AF MANOMETER AIR FILTER GAUGE, .10-0-1.0

SPECIFICATION:

• Highly accurate, easy to use, almost indestructible, foolproof and dependable.
• There are no moving parts - no mechanical linkages - nothing to wear out, jam or deteriorate from vibration.
• They never need calibration.
• Precision machined 1" thick solid acrylic plastic, virtually unbreakable and free of distortion.
• The fluid bore is precision drilled to ±.0002" to assure life long accuracy.
• A glass spirit level is built into the body and encapsulated to prevent damage or tampering.
• The scale is mirror polished chrome plated brass to assure parallax free reading by alignment of the meniscus with its reflection.
• Safety traps are incorporated in the body to prevent loss of fluid due to pressure surges.
• Red and green signal flags indicate clearly when a filter change is necessary.
• Gauges are suitable for use in ambient temperatures of -20 to 150°F.
• Connection fittings are positively sealed by "O" rings but easily removed for zeroing or addition of fluid.
• Furnished complete with instructions.