Wikai Liquid filled manometer
Your review: The picture doesn't match the product in that the 1/8 NPT nipple comes out the back instead of the bottom like in the picture.
Pros: Good sturdy product, looks well made, not cheap
Cons: Very large air bubble, almost 1/3 the face, making it hard to read. I ended up taking fluid from a unused manometer of the same make and putting it in this one.