The Therma Type H Liquid Level Gauge is a reliable, swing-arm type tank gauge used for measuring all types of liquid levels. Its simple mechanical design promotes durability, minimal upkeep, quick installation, and easy/inexpensive repairs. This liquid level gauge is custom-made in-house to fit your tank. We can account for double walls and pipe risers, and we offer multiple materials of construction to accommodate nearly any type of liquid. This tank gauge has an easily removable bushing, which allows you to thread the bushing into the tank first. Then, drop the gauge in and tighten up the red nut. This allows you to aim the swing arm precisely where you want it and eliminates the swing arm spinning inside the tank while you are threading the indicator in.