Best Vacuum Gauges

Documenting measurements: When you use the testo 552 in combination with the testo 570 digital manifold, you can save the testo 552's measuring values or display them directly on a laptop via the optional EasyKool software. Ensuring dehumidification: The testo 552 not only measures pressure, but also gives the water evaporation temperature associated with it.
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Each device comes with: vacuum gauge controller, thermocouple vacuum gauge tube, 10' controller to gauge tube cable, 5' AC power supply, and is pre-tested and calibrated under actual vacuum against a NIST standard.
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The NoShok 200 series 2.5" (63 mm) pressure gauge has brass wetted parts, a dry circular dial enclosed in a steel case, a lower mount or center back male 1/4" NPT connection, and measures pressure with a single or dual scale with an accuracy of + or - 1.5%. The male connection is mounted on the bottom or center back of the gauge and has a 1/4" NPT (National Pipe Thread) rate. All types of pressure gauges include either a male or a female mount to connect to the vessel where pressure is being measured, and display results on a dial with varying increments of measure across a given range. NoShok manufactures temperature and pressure measurement instruments, including pressure gauges, transducers and indicators, level transmitters, temperature switches and transmitters, and bimetal thermometers.
Find Best Price at AmazonBest Compound Gauges

TWO PCS TONGUE AND GROOVE REVERSIBLE HARDENED top & bottom JAWS.
Reviews
Find Best Price at Amazon"I use this for welding off of my truck."
Best Differential Gauges

The DigiMag Series DM-1000 Digital Differential Pressure and Flow Gages monitor the pressure of air and compatible gases just as its famous analog predecessor the Magnehelic Differential Pressure Gage.
Find Best Price at AmazonBest Industrial Pressure Gauges

Super Pro 80960BU Pool Spa Filter Water Pressure Gauge, 0-60 PSI, Bottom Mount, 1/4-Inch Pipe Thread
This side mount gauge fits most D.E. Enter your model number to make sure this fits.
Reviews
Find Best Price at Amazon"I took the cover off this and compared it to my old Hayward gauge. So while you may not need a new gauge, you will probably want one to confirm the pressure is reading correctly after cleaning."
"It works fine, even with water in it, and the price is quite reasonable."
"I use the meter for measuring tire air pressure."
"This guage is doing fine and giving me solid pressure readings on my in ground sand filter system."
"To help keep water out, I installed the gauge so the face tilts slightly down toward the ground (maybe this is the trick to longer life?)."
"Last pool filter gauge lasted less than a year and cost more than double."
"Overall, cheap quality that will work for a few months."
"Installed the end of May,2017-3 months later and its already stuck and not working on my pool filter system."
Best Pressure Gauge Accessories

Mainly used to cut, distribution and change the direction of medium flow for water, oil, gas, etc. Specifications: Material: C46500 Lead-free Brass. Applicable medium: water, gas, oil. Nominal diameter: DN20. Pressure environment: Ordinary Pressure. Operating temperature: -10 ℃ ≤ t ≤ 120 ℃. Direction of flow: One Way. Drive: Manual. Thread: 3/4" NH thread. Maximum psi: 160 psi. Adjust Water Pressure from 0-160PSI - Adjustable water pressure setting can easily adjust whatever water pressure you want (from 0-160PSI, Preset at 45PSI) by screwer. Save water and protect your water pipes, water tanks, filters, water heaters.
Reviews
Find Best Price at Amazon"Good Quality pressure valve."
"good price."
"Works great well built product."
"The joints already have plumbing tape as well which point to the attention to detail. Make sure the gage itself (on any regulator) is out of the sun for long periods of time."
"I like the steady water pressure since all campgrounds seem to have different water pressure. There is nothing like getting water thrown all over you when you turn on a faucet with to much water pressure and my husband said it not good for the plumbing in the RV with to much pressure."
"This is built solid and is accurate."
"brass threads crossed will not allow hose connection."