N.M. Industries is offering gauge glass fitting. The company is the manufacturer of all types of engineering products, industrial valves, pipes fittings, and accessories. The gauge glass fitting can be used in measuring the level of the fluid in tanks, vessels, etc. The gauge glass fitting has been manufactured in various shapes and sizes like 1] offset pattern where one valve on top and the other with a drain valve at bottom using tubular borosilicate glass tube in between the two valves. 2] using toughened borosilicate glass in between two oval shaped blocks and backside of the block to be welded, will be made to suit the radius of the cylinder on which it will be welded.