From the product description, check product page for current description, price and availability:
- Black Steel Case With Chrome Bezel
- Brass Socket And Movement
- Phosphor Bronze Bourdon Tube
- Dry Non-Fillable
- 3-2-3% Accuracy
I use a similar gauge (different manufacturer, model & specifications) in my Spunding Valve Build. A Spunding Valve allows you to ferment under pressure, naturally and precisely carbonate in the keg, fix over-carbonated beers and more. See: Build a Spunding Valve for more info.
5/9/21 10:30 PM Central: This is selling for just $3.31. Shipping is also free to many US addresses with Prime Membership [Try Prime for Free] or a qualifying order. We featured this a couple times at this same price and it’s sold out. As of this post the deal is available again… Prices and availability can change quickly. Check product page for current info – More About Prices
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Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions.