About Pressure Gauges
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About Vacuum Pumps
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Tire Pressure Gauges with Dial
View pressure readings on a numbered dial.
Gauges with a rubber sleeve prevent metal-to-metal contact with your tire to avoid damaging it.
Pressure Range | Hose | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Head Type | Number of Heads | psi | kPa | Numeric Increments, psi | Accuracy | Overall Lg. | Dial Dia. | Finish | Material | Case Material | Lg. | Material | Features | Each | ||
| A | Angled | 1 | 0-15 | 0-100 | 0.5 | ±3% | 4 3/4" | 2 1/2" | Nickel Plated | Brass | Rubber | __ | __ | Rubber Sleeve | 0000000 | 000000 |
| A | Angled | 1 | 0-60 | 0-400 | 2 | ±3% | 4 3/4" | 2 1/2" | Nickel Plated | Brass | Rubber | __ | __ | Rubber Sleeve | 0000000 | 00000 |
| A | Angled | 1 | 0-160 | 0-1,100 | 5 | ±3% | 4 3/4" | 2 1/2" | Nickel Plated | Brass | Rubber | __ | __ | Rubber Sleeve | 0000000 | 00000 |
| B | Angled | 1 | 0-120 | 0-800 | 2 | ±3% | 4 3/4" | 2 1/2" | Nickel Plated | Brass | Rubber | __ | __ | Rubber Sleeve, Tread Depth Gauge | 00000000 | 00000 |
| C | Straight | 1 | 0-160 | 0-1,100 | 5 | ±3% | 14" | 2" | Chrome Plated | Brass | Rubber | 5" | Rubber | Rubber Sleeve | 00000000 | 00000 |
| C | Straight | 1 | 5-160 | __ | 1 | ±3% | 16 1/2" | 2" | Chrome Plated | Steel | Painted Steel | 11" | Rubber | __ | 0000000 | 00000 |
| D | Angled | 2 | 0-60 | 0-400 | 1 | ±3% | 20" | 2" | Chrome Plated | Brass, Zinc | __ | 10" | Rubber | Rubber Sleeve | 00000000 | 00000 |
| D | Angled | 2 | 0-160 | 0-1,100 | 1 | ±3% | 20" | 2" | Chrome Plated | Brass, Zinc | __ | 10" | Rubber | Rubber Sleeve | 0000000 | 00000 |
| D | Angled | 2 | 0-300 | 0-2,060 | 5 | ±3% | 20" | 2" | Chrome Plated | Brass, Zinc | __ | 10" | Rubber | Rubber Sleeve | 0000000 | 00000 |
| E | Angled, Straight | 2 | 0-160 | 0-1,100 | 5 | ±3% | 23" | 2" | Chrome Plated | Brass, Zinc | __ | 12" | Rubber | __ | 00000000 | 00000 |
Tire Pressure Gauges with Indicator Bar
A bar slides out of the top of these gauges to display pressure reading.
Black plastic-coated brass gauges are non-slip for an improved grip. The matte black finish won’t reflect light. Stainless steel gauges are more corrosion resistant than steel and brass gauges.
Gauges with a quick-disconnect tip press into the valve stem rather than clamping over it for a faster setup and more accurate readings.
Gauges with a 10° bend are best for reaching valves on large tires.
Pressure Range | ||||||||
|---|---|---|---|---|---|---|---|---|
| psi | kPa | Numeric Increments, psi | Accuracy | Overall Lg. | Indicator Bar Material | Features | Each | |
Chrome-Plated Steel | ||||||||
| 10-50 | __ | 1 | ±2 psi | 9" | Plastic | Pocket Clip, Quick-Connect Tip | 00000000 | 00000 |
Nickel-Plated Brass | ||||||||
| 2-20 | 20-140 | 1 | ±1 psi | 6" | Plastic | Pocket Clip | 0000000 | 0000 |
| 5-50 | 40-350 | 1 | ±2 psi | 6" | Plastic | Pocket Clip | 0000000 | 0000 |
| 10-70 | 60-500 | 2 | ±2 psi | 6" | Plastic | Pocket Clip, Tread Depth Gauge | 0000000 | 0000 |
| 20-120 | 120-820 | 2 | ±2 psi | 6" | Plastic | Pocket Clip | 0000000 | 0000 |
Stainless Steel  | ||||||||
| 2-20 | __ | 1 | ±2 psi | 5 3/4" | Plastic | Pocket Clip | 00000000 | 0000 |
| 10-50 | 70-340 | 1 | ±2 psi | 5 3/4" | Plastic | Pocket Clip | 00000000 | 0000 |
| 10-75 | 20-500 | 1 | ±2 psi | 5 3/4" | Plastic | Pocket Clip | 00000000 | 0000 |
Pressure Range | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| psi | kPa | Numeric Increments, psi | Accuracy | Overall Lg. | Indicator Bar Material | Features | Includes | Each | |
Chrome-Plated Steel | |||||||||
| 10-120 | __ | 2.5 | ±2 psi | 9" | Plastic | Pocket Clip, Quick-Connect Tip | __ | 00000000 | 000000 |
Chrome-Plated Brass | |||||||||
| 10-130 | 100-900 | 2 | ±2 psi | 12" | Plastic | __ | Storage Bag | 00000000 | 00000 |
Nickel-Plated Brass | |||||||||
| 10-160 | 80-1,100 | 2 | ±2 psi | 12 3/4" | Plastic | __ | __ | 0000000 | 00000 |
Black Plastic-Coated Brass | |||||||||
| 10-160 | 80-1,100 | 2 | ±2 psi | 13" | Plastic | __ | __ | 00000000 | 00000 |
Pressure Range | ||||||||
|---|---|---|---|---|---|---|---|---|
| psi | kPa | Numeric Increments, psi | Accuracy | Overall Lg. | Indicator Bar Material | Features | Each | |
Nickel-Plated Brass | ||||||||
| 10-160 | 80-1,100 | 2 | ±2 psi | 13" | Plastic | 10° Bend | 00000000 | 000000 |
| 10-160 | 80-1,100 | 2 | ±2 psi | 13 1/4" | Plastic | __ | 0000000 | 00000 |
| 20-120 | 120-820 | 2 | ±2 psi | 6 1/2" | Plastic | Pocket Clip | 0000000 | 00000 |
Black Plastic-Coated Brass | ||||||||
| 10-160 | 80-1,100 | 2 | ±2 psi | 13" | Plastic | __ | 00000000 | 00000 |
Tire Pressure Gauges with Digital Readout
View pressure readings on an easy-to-read digital display.
Gauges with a quick-connect tip press into the valve stem rather than clamping over it for a faster setup and more accurate readings.
Hose | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Head Type | Number of Heads | Pressure Range, psi | Numeric Increments, psi | Accuracy | Overall Lg. | Material | Lg. | Material | Digital Display Type | Batteries Included | Features | Each | ||
| A | Straight | 1 | 3-100 | 0.5 | ±1% | 5 1/2" | Plastic | __ | __ | LCD | Yes | __ | 0000000 | 000000 |
| B | Angled | 1 | 0-100 | 0.1 | ±2% | 2 3/4" | Plastic | __ | __ | LCD | Yes | Quick-Connect Tip | 00000000 | 00000 |
| B | Angled | 1 | 0-100 | 0.1 | ±2% | 3 3/4" | Plastic | __ | __ | LCD | Yes | Quick-Connect Tip, Built-In Light | 00000000 | 00000 |
| B | Angled | 1 | 0-150 | 0.1 | ±2% | 3 3/4" | Plastic | __ | __ | LCD | Yes | Quick-Connect Tip, Built-In Light, Tread Depth Gauge | 00000000 | 00000 |
| B | Angled | 1 | 0-150 | 0.1 | ±2% | 3 3/4" | Plastic | __ | __ | LCD | Yes | Quick-Connect Tip, Built-In Light, Tread Depth Gauge, Bleed Valve | 00000000 | 00000 |
| C | Angled | 1 | 0-150 | 0.1 | ±2% | 8 3/4" | Chrome-Plated Steel | __ | __ | LED | Yes | Quick-Connect Tip | 00000000 | 00000 |
| D | Angled, Straight | 2 | 1-160 | 1 | ±1% | 19 1/2" | Chrome-Plated Brass | 10 1/2" | Rubber | LCD | Yes | __ | 0000000 | 00000 |
Calibrators for Tire Pressure and Inflator Gauges
Test the accuracy of tire pressure gauges and tire inflation gauges. Designed to higher accuracy standards than typical tire gauges, these calibrators are not meant to be used to regularly check tire pressure directly. Instead, they serve as an objective reference to eliminate inaccuracies and discrepancies between your gauges. To use, check tire pressure first using the calibrator and then again with your tire pressure gauge. Make calibration adjustments to your gauge until its reading matches the reading on the calibrator.
Pressure Range | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Head Type | Number of Heads | psi | kPa | Numeric Increments, psi | Accuracy | Overall Lg. | Dial Dia. | Finish | Material | Features | Each | |
Dial Readout | ||||||||||||
| Angled | 2 | 10-120 | 100-900 | 2 | ±1 psi | 11 1/2" | 3/4" | Chrome Plated | Brass | Bleed Valve | 0000000 | 000000 |
Compression Testers
Check engine compression to maintain top performance.
Testers with a quick-release coupler make it easy to connect and disconnect the gauge and the hose.
Testers that include both injector adapters and glow plug adapters are compatible with most diesel engines.
Add an optional adapter if you tester does not come with an adapter that matches your engine's spark plug thread size.
Hose | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Readout Type | Scale | Pressure Range, psi | Accuracy | Digital Display Type | Dial Dia. | Case Material | Lg. | Material | Reinforcement | Batteries Included | Includes | Features | Container Type | Each | |
For Gasoline Engine | |||||||||||||||
| Dial | psi, kg/cm2, bar, kPa | 0-300 | ±2% | __ | 3" | __ | 15" | Rubber | Fiber Braid | __ | M14×1.25 mm Spark Plug Adapter, Replacement Valve Core | Quick-Release Coupler | __ | 0000000 | 000000 |
| Dial | psi, bar | 0-300 | ±3% | __ | 2 3/4" | __ | 24" | Rubber | __ | __ | M14×1.5 mm Spark Plug Adapter on 12" Hose, M14×1.5 mm Long Thread Spark Plug Adapter on 12" Hose, M12×1.25 mm/M16×1.5 mm Spark Plug Adapter on 12" Hose, M10×1 mm Spark Plug Adapter, 8" Extension Tube, 24" Extension Hose, Repair Parts | __ | Plastic Case | 00000000 | 000000 |
For Diesel Engine | |||||||||||||||
| Dial | psi, bar | 0-1,000 | ±3% | __ | 2 1/2" | __ | 16.5" | Rubber | Steel Wire | __ | __ | Quick-Release Coupler | __ | 00000000 | 00000 |
| Dial | psi, bar | 0-1,000 | ±3% | __ | 2 1/2" | __ | 16.5" | Rubber | Steel Wire | __ | Two M8×1 mm Glow Plug Adapters, Three M10×1 mm Glow Plug Adapters, Three M10×1.25 mm Glow Plug Adapters, M12×1.25 mm Injector Adapter, M14×1.25 mm Glow Plug Adapter, M24×1.5 mm Injector Adapter, Injector Adapter for Cummins ISB 5.98L (2nd Generation) | Quick-Release Coupler | Plastic Case | 00000000 | 000000 |
For Diesel, Gasoline Engine | |||||||||||||||
| Digital | psi | 0-300 | ±1% | LED | __ | Plastic | 18" | Rubber | __ | Yes | 1 Spark Plug Adapter, 1 Glow Plug Adapter | Quick-Release Coupler | __ | 0000000 | 000000 |
Fuel Injection Pressure Testers
Check fuel injection pressure to maintain your car's gas mileage. Attach these testers to your fuel line and idle the engine to test—stable pressure readings indicate that all is well. Fluctuations in pressure can result from a number of issues, including a failing fuel pump, clogged fuel filter, faulty fuel pressure regulator, or leaking fuel injectors.
Hose | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Readout Type | For Engine Type | For Valve Type | Adapter Thread Sizes Included | Scale | Pressure Range, psi | Accuracy | Dial Dia. | Lg. | Material | Includes | Features | Container Type | Each | |
| Dial | Gasoline | Schrader | 5/16"-24, 7/16"-28 | psi, bar | 0-100 | ±3% | 3 1/2" | 48" | Rubber | 2 Adapters on 7" Hose, 6 ft. Drain Hose | Hanging Hook, Pressure Relief Valve, Quick-Release Coupler | Plastic Case | 0000000 | 0000000 |
Cylinder Leak Testers
Test how well your engine cylinder holds compressed air. Often used after getting a low reading from a compression tester, these leak testers show the percentage of the air leaking out of your cylinder. Remove all spark plugs from your engine and rotate it so the cylinder being tested is at the top. Make sure the cylinder is top dead center on its stroke, with both valves closed. Connect one end of these testers to the spark plug hole, and the other to a compressed air source. Fill the cylinder to its specified air pressure, and the gauge on these testers will show how much air is leaking out.
Add a whistle to help pinpoint the location of a leak. If the sound of the whistle changes while the cylinder moves through its stroke, you’ve found the leak. Connect to the end of the hose or adapter on a leak tester.
Hose | Air Connection | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Readout Type | For Engine Type | Scale | Pressure Range, psi | Accuracy | Dial Dia. | Lg. | Material | Quick-Disconnect Shape | Coupling Size | Includes | Features | Container Type | Each | |
| Dial | Gasoline | psi, bar | 0-100 | ±3% | 2 3/4" | 26" | Rubber | Industrial | 1/4 | M14×1.5 mm Spark Plug Adapter, M14×1.5 mm Long Thread Spark Plug Adapter | Leak Percentage Dial, Quick-Release Coupler | Plastic Case | 0000000 | 0000000 |
Hose | |||||
|---|---|---|---|---|---|
| For Engine Type | Thread Size | Lg. | Material | Each | |
| Gasoline | M14 × 1.5 mm M18 × 1.5 mm | 24" | Rubber | 0000000 | 000000 |
Hand-Operated Vacuum Pumps
Convenient for one-handed liquid sampling and extraction, these pumps are often used for vacuum filtration and bleeding hydraulic and liquid lines. They can also be used for pressure applications up to 30 psi.
Intake | Discharge | Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Vacuum, in. of Hg | Volume per Stroke, cu. in. | Max. Pressure, psi | Temp. Range, °F | Tube Connection Type | For Tube ID | Tube Connection Type | For Tube ID | Lg. | Wd. | Ht. | Includes | Each | |
| 25 | 1 | 30 | -10° to 190° | Barbed | 1/4" | Barbed | 1/4" | 8" | 2 1/2" | 10" | 3" Lg. of 5/32" ID PVC Tubing, 3 5/8" Lg. of 1/4" ID PVC Tubing, Two 24" Lg. of 1/4" ID PVC Tubing, Cup Adapter, Reservoir Jar, Tubing Adapters and Plugs, Vacuum/Pressure Gauge, Plastic Carrying Case | 0000000 | 0000000 |
Differential Pressure and Vacuum Gauges with Digital Display
Gauges have a four-digit LCD display for easy reading of measurements. Commonly used to indicate clogged filters, these gauges display the difference between two pressure or vacuum measurements. They are also known as compound gauges.
- For Use With: Air
- Accuracy: ±0.5% Full Scale (Not Graded)
Pressure Range | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| psi | kPa | in. of H₂O | mbar | Vacuum Range, in. of Hg | Resolution, in. of H₂O | Max. Pressure, psi | For Tube ID | Environment Temp. Range, °F | Process Temp. Range, °F | Digit Ht. | Batteries Included | Features | Each | |
Barbed Tube Connection | ||||||||||||||
| 0-0.723 | 0-4.982 | 0-20" | 0-49.82 | 1.471"-0 | 0.01 | 10 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 0000000 |
| 0-7.225 | 0-49.82 | 0-200" | 0-498.2 | 14.71"-0 | 0.1 | 30 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 000000 |
| 0-20 | 0-137.9 | 0-553" | 0-1,379 | 40.72"-0 | 0.01 | 60 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 000000 |
Barbed Tube Connection with Calibration Certificate Traceable to NIST | ||||||||||||||
| 0-0.723 | 0-4.982 | 0-20" | 0-49.82 | 1.471"-0 | 0.01 | 10 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 000000 |
| 0-7.225 | 0-49.82 | 0-200" | 0-498.2 | 14.71"-0 | 0.1 | 30 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 000000 |
| 0-20 | 0-137.9 | 0-553" | 0-1,379 | 40.72"-0 | 0.01 | 60 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 000000 |
Low-Pressure Differential Gauges with Digital Display
Measure small changes in air pressure with these hand-held gauges. They have a four-digit LCD display for easy reading of measurements. Gauges are commonly used to indicate clogged filters and to monitor fans and blowers.
- For Use With: Air, Natural Gas
- Accuracy: ±0.5% Full Scale (Not Graded)
Pressure Range | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| psi | bar | Resolution, psi | Max. Pressure, psi | For Tube ID | Environment Temp. Range, °F | Process Temp. Range, °F | Digit Ht. | Ht. | Wd. | Batteries Included | Environmental Rating | Each | |
Barbed Tube Connection | |||||||||||||
| 0-30 | 0-2.069 | 0.01 | 60 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | 6 1/2" | 2 13/16" | Yes | NEC Class I Division 2 Groups A, B, C, D | 0000000 | 0000000 |
Barbed Tube Connection with Calibration Certificate Traceable to NIST | |||||||||||||
| 0-30 | 0-2.069 | 0.01 | 60 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | 6 1/2" | 2 13/16" | Yes | NEC Class I Division 2 Groups A, B, C, D | 0000000 | 000000 |
| Optional Nylon Carrying Case | 0000000 | Each | 000000 |
- For Use With: Air, Natural Gas
- Accuracy: ±0.5% Full Scale (Not Graded)
Pressure Range | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| kPa | in. of H₂O | Resolution, in. of H₂O | Max. Pressure, psi | For Tube ID | Environment Temp. Range, °F | Process Temp. Range, °F | Digit Ht. | Ht. | Wd. | Batteries Included | Environmental Rating | Each | |
Barbed Tube Connection | |||||||||||||
| 0-4.982 | 0-20 | 0.01 | 10 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | 6 1/2" | 2 13/16" | Yes | NEC Class I Division 2 Groups A, B, C, D | 0000000 | 0000000 |
| 0-49.82 | 0-200 | 0.1 | 30 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | 6 1/2" | 2 13/16" | Yes | NEC Class I Division 2 Groups A, B, C, D | 0000000 | 000000 |
Barbed Tube Connection with Calibration Certificate Traceable to NIST | |||||||||||||
| 0-4.982 | 0-20 | 0.01 | 10 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | 6 1/2" | 2 13/16" | Yes | NEC Class I Division 2 Groups A, B, C, D | 0000000 | 000000 |
| 0-49.82 | 0-200 | 0.1 | 30 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | 6 1/2" | 2 13/16" | Yes | NEC Class I Division 2 Groups A, B, C, D | 0000000 | 000000 |
| Optional Nylon Carrying Case | 0000000 | Each | 000000 |
Hand-Held High-Vacuum Gauges
Check the vacuum levels in high-vacuum pumps, valves, and chambers with this compact gauge. Use a ring and clamp (both sold separately) to connect them to another quick-clamp high-vacuum fitting, also known as KF, QF, and NW fittings. The digital display shows measurements in torr, mbar (millibar) and hPa (hectopascal).
- For Use With: Air
- Accuracy: ±10% @ 1.5 × 10 -4 to 7.5 torr, ±30% @ 22.5 to 75 torr
Vacuum Range | ||
|---|---|---|
| Torr | mbar | hPa |
| 3.7 × 10 -4 to 750 | 5 × 10 -4 to 1000 | 5 × 10 -4 to 1000 |
Gauges with Center Back Connection | Clamps | Rings | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High-Vacuum Flange Size | Wd. | Ht. | Dp. | Environment Temp. Range, °F | Process Temp. Range, °F | For Tube OD | Flange OD | Number of Batteries Included | Each | Each | Each | |||
Quick Clamp Tube Connection | ||||||||||||||
| 16 | 2 3/8" | 4 3/4" | 1" | 40° to 100° | 0° to 140° F | 3/4" | 1.18" | 1 | 000000 | 000000000 | 00000000 | 00000 | 00000000 | 00000 |
Hand-Held Weather Meters
Take field measurements of temperature, dew point, heat index, wind chill, wind speed, and relative humidity.
| Display | Digit Ht. | Resolution | Ht. | Wd. | Dp. | Housing Material | Includes | Batteries Included | Each | |
| LCD | 3/8" | 0.1 | 4 7/8" | 1 7/8" | 1 1/8" | Plastic | Carrying Case, Lanyard | Yes | 000000 | 0000000 |