DWYER

PRESSURE GAUGES, PRESSURE SWITCHES, COMBINATION PRESSURE SWITCHES AND GAUGES, AIR FILTER GAUGES, KITS FOR AIR FILTER GAUGE SERVICE CONSISTING OF AIR FILTER GAUGE PARTS AND ACCESSORIES, MANOMETERS, OVERPRESSURE SAFETY TRAPS, KITS FOR SERVICING GAS APPLIANCES CONSISTING OF A MANOMETER AND PARTS AND ACCESSORIES THEREFOR, HOOK GAUGES, PITOT TUBES, AIR VELOCITY CALCULATORS, NULL SWITCHES, FLOW METERS, FLOW METER DIRECT READING SCALES, FLOW METER CONVERSION CURVES, METERING VALVES, COMBINATION TEST SETS, SMOKE GAUGES, THERMOMETERS, CARBON DIOXIDE INDICATORS, MAGNETIC GAUGE MOUNTS, AIR VELOCITY METERS, AIR METERS, AIR METER KITS, AIR VOLUME GAUGES, AIR VOLUME GAUGE KITS, WIND SPEED INDICATORS, WIND METERS, ADJUSTABLE SIGNAL FLAGS, GAS PRESSURE KITS, GAUGE CARRYING CASES, PSYCHROMETERS, SLIDE RULES, ANEMOMETERS, MANOMETER TYPE AIR FLOW BALANCING APPARATUS, COMBINATION SAFEGUARD EQUIPMENT CONSISTING OF DIFFERENTIAL PRESSURE SWITCHES AND PARTS AND ACCESSORIES THEREFOR, AND PARTS AND ACCESSORIES FOR GAUGES, PRESSURE SWITCHES, MANOMETERS, AND FLOW METERS