Best Compound Gauges of 2026
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Compound gauges are a type of pressure gauge that measures both positive and negative pressure. They are equipped with two different pressure scales, one for positive pressure and the other for vacuum pressure. These gauges are commonly used in HVAC systems, refrigeration units, and pneumatic equipment. The dual-scale feature allows for a more accurate reading of pressure changes and ensures that the correct pressure is maintained in the system. Compound gauges are available in a variety of sizes and pressure ranges to accommodate different applications.
At a Glance: Our Top Picks
Top 10 Compound Gauges
JB Industries M2-820 Glow In The Dark Manifold Gauges
The JB Industries M2-820 Glow In The Dark Manifold Gauges are ideal for measuring refrigerants such as R-22, R-404A, and R-410A. The compound steel case is illuminated and the gauges are surge dampened for accuracy. The high impact clear Lexan lens and full-size brass movements make these gauges durable and easy to use. The recalibration screw ensures that the gauges stay accurate and the 1/8" MPT connection makes them compatible with a wide range of refrigeration systems. Made in the USA.
Dixon GC210 Compound Gauge
The Dixon Compound Gauge GC210, with a 2-1/2" face and 1/4" center back mount, weighing only 1 pound, originates from the USA. It features a PowerFlex movement with a polyester segment, specially crafted for long-lasting use. This compound gauge by Dixon is ideal for accurately measuring pressure up to 160 psi. The durable design ensures extended wear, making it a reliable tool for various applications.
ASHCROFT 1259SD Compound Gauge
The ASHCROFT Compound Gauge is designed to measure pressure and vacuum with precision. With a 4-1/2 inch dial, it offers an accuracy of +/-0.5%, ensuring reliable readings for your applications. The gauge features a durable glass lens that protects the dial and enhances visibility, making it easy for you to read measurements at a glance. Additionally, the thermoplastic case is built to withstand a wide temperature range, from -50 to 150 degrees Fahrenheit, providing versatility in various environments. The 316L stainless steel socket and tube materials ensure durability and resistance to corrosion, making this gauge a dependable choice for long-term use.
ASHCROFT 1009SW Compound Gauge 30 in. Hg VAC to 30 psi
The ASHCROFT Compound Gauge is designed to measure pressure from 30 inches of mercury vacuum to 30 psi, making it a versatile tool for various applications. Its 3-1/2" dial with clear graduations helps you easily read measurements. The gauge features a durable polycarbonate lens, protecting the dial from damage while allowing clear visibility. Its case is made of 304 stainless steel, providing corrosion resistance and long-lasting use. This gauge also operates well in extreme temperatures, from -40 to 200 degrees Fahrenheit, so you can rely on it in different environments.
GRAINGER APPROVED Compound Gauge 4-1/2 in
The GRAINGER APPROVED Compound Gauge is designed for versatility and precision. With a 4-1/2 inch dial, it provides clear readings, making it easy for you to monitor pressure levels accurately. Its durable brass connection and bronze tube ensure long-lasting performance, even in tough environments. Operating effectively in temperatures ranging from -40 to 140 degrees Fahrenheit, this gauge is suitable for a variety of applications. Additionally, its glass lens offers protection while allowing you to read measurements effortlessly, enhancing your overall user experience.
GRAINGER APPROVED Compound Gauge
The GRAINGER Compound Gauge is designed for refrigeration ammonia applications, providing reliable measurements from a vacuum of 30 inches of mercury to 300 psi. Its sturdy black steel casing ensures durability in various environments, while the polycarbonate lens offers excellent visibility. With an operating temperature range of -40 to 150 degrees Fahrenheit, this gauge can perform well in extreme conditions. Additionally, the 1/4" NPT connection allows for easy installation, making it a convenient choice for your monitoring needs.
PIC Gauges 204L-354CF Front Flanged Glycerine Pressure Gauge
The PIC Front Flanged Gauge offers a front-mounted flange design that makes installation on panels straightforward and secure, giving you easy access and stable placement. Its stainless steel case and bezel provide excellent durability and resistance to corrosion, ensuring the gauge lasts in tough environments. Inside, the brass internals contribute to reliable performance and long-term stability, ideal for consistent pressure readings. The gauge also features a phosphor bronze Bourdon tube, which is known for its accuracy and responsiveness, helping you monitor pressure changes efficiently and safely.
Generic TOP243YN TO220 Series Compound Gauges
The Generic TOP243 Compound Gauges come in a set of 10 pieces, making them a practical choice for your projects. These gauges are designed in the TO220 package, which is a common and reliable form factor that fits many electronic applications. The model series includes TOP243YN and TOP243Y, offering you options within the same product line. As compound gauges, they are useful for measuring and controlling various electrical parameters, providing you with consistent performance and convenience in your work. Whether you're repairing or building electronic devices, this set offers versatility and value.
Generic Yellow Tiger Eye Stone Bracelet CB2052310
The Generic Tiger Eye Bracelet offers a unique combination of natural materials and thoughtful sizing. With beads measuring about 16mm, it provides a substantial feel without being too bulky, perfect for daily wear. The total length ranges between 18.5 to 22 inches, giving you flexibility to find a comfortable fit that suits your wrist. The agate beads vary from 2.5 to 3.5 inches, adding a touch of elegance and durability. Additionally, the wooden ring size is 0.7 inches, which complements the bracelet’s design and adds an earthy aesthetic. This bracelet is great if you want a stylish and meaningful accessory that’s easy to wear and adjust.
Generic Vintage Style Tassel Freshwater Pearl Clip-On Earrings
The Generic Pearl Clip Earrings offer a stylish and comfortable accessory option for those without ear piercings. With a compact size of about 25mm by 20mm and weighing roughly 32 grams per pack, these earrings are lightweight enough for all-day wear. The set includes four pieces, giving you versatility in styling or sharing. Their vintage-inspired design adds a touch of elegance and luxury, making them suitable for both casual and formal occasions. These clip-on earrings provide an easy way to enjoy the look of fine jewelry without the need for pierced ears, giving you convenience and style in one package.
Frequently Asked Questions (FAQs)
1. How accurate is a compound pressure gauge?
A compound pressure gauge is effective for measuring both vacuum and positive pressure but is limited to lower pressure ranges, typically 200 psi or less. If used for higher pressure ranges, the error band of 0.25% of full scale can exceed the vacuum range of -14.7 psi.
2. What are the four types of pressure gauge?
There are several types of pressure gauges including Bourdon Tube Pressure Gauge, Diaphragm Pressure Gauge, Capsule Pressure Gauge, Absolute Pressure Gauge, Differential Pressure Gauge, Bellows Pressure Gauge, Manometer Pressure Gauge, and Piezometer Pressure Gauge.
3. What are the different types of gauges in HVAC?
In HVAC, the three most popular gauges are High Pressure Gauges, Vacuum Gauges, and Compound Gauges. High Pressure Gauges with a scale range from 0 to 500 psi are used to measure the high-pressure side of the refrigerating system. It's important to know the typical pressure of the point being measured.
During our compound gauge research, we found 24 compound gauge products and shortlisted 10 quality products. We collected and analyzed 2,535 customer reviews through our big data system to write the compound gauges list. We found that most customers choose compound gauges with an average price of $28.42.
The compound gauges are available for purchase. We have researched hundreds of brands and picked the top brands of compound gauges, including JB Industries, Dixon, ASHCROFT, GRAINGER APPROVED, PIC Gauges. The seller of top 1 product has received honest feedback from 351 consumers with an average rating of 4.7.
Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.