This is a gauge designed to read very low , vacuum or pressure that you find in modern EVAP systems . used it a couple of time , that tool was sold at evap training classes .
NOS Dwyer 1211-12 Slack Tube Manometer
Speedway Motors Compression Test Kit, Digital Gauge, 300 PSI Gauge
Brake Drum Gauge Knurled Knob Tool Range 6-1/2" to 14-1/4" Brake Resetting Gauge
Car Catalytic Converter Gauge Tester Exhaust Blockage Pressure Gauge Meter
6434 Sleeve Height Counter Bore Gauge for All Diesel Cylinder Bore Gauge 0-1.00"
2 Gauge Jumper Cable Heavy Duty Car Battery Clamps (2 Gauge 20 Feet)
