This hydraulic level thermometer proved TO be a valuable addition to my industrial lubrication routine .As my tests showed, the accuracy of the readings is superb. It is compatible with a range of hydraulic fluids which makes it versatile and hassle-free. The thermometer is built to last and withstands harsh conditions. The only drawback was the lack of instructions, which may be challenging for new users. But overall, this is a well-designed product that delivers what it promises. A must-have in the Industrial and Scientific space..