Mitco B136-1M Boiler Gauge, 3-1/4"Dia. X 3"L, 1/2"NPT, Center Back Connection

Accurately reads vacuum without disconnecting pump fittings or oil lines. Use with General Filters 1A-25A, Harvey 264, 264F, Mitco 264M, 264FM, Westwood S254, Unifilter 77. Made in the USA.

Yellow Jacket® Blue Compound Gauge R-134A, R-404A, R-407C 3-1/8" With 1% accuracy (Class 1) calibration. Large 3-1/8" gauges are housed in a red or blue steel case with front recalibrator screw. High visibility colored temperature scales are easy to read through the full view polycarbonate crystal. Flutterless™ technology with brass surge protector to minimize needle pulsation Brass gauge movement Copper alloy Bourdon tube 1/8" NPT Male connection Calibrated to 1% accuracy Color-coded red for pressure and blue for compound Color-coded refrigerant types

Yellow Jacket® 2-1/2" Blue Low Side Gauge 49052 Features: Steel case for durability High-visibility dials with colored temperature scales for easy reading Flutterless™ technology surge protector minimizes the needle pulsation for improved accuracy 1/8" NPT Male connection 3-2-3% accuracy Calibration traceable to NIST standards

Yellow Jacket® Blue Compound Gauge R-22, R-404A, R-410A 3-1/8" With 1% accuracy (Class 1) calibration. Large 3-1/8" gauges are housed in a red or blue steel case with front recalibrator screw. High visibility colored temperature scales are easy to read through the full view polycarbonate crystal. Flutterless™ technology with brass surge protector to minimize needle pulsation Brass gauge movement Copper alloy Bourdon tube 1/8" NPT Male connection Calibrated to 1% accuracy Color-coded red for pressure and blue for compound Color-coded refrigerant types

Large face for easy reading at distance or in dim light. Dials specifically designed for oil burner service. High impact acrylic construction. 1/8" NPT bottom mount. Made in the USA.