KLM-AVI type 
- It is an oil gauge that incorporates an automatic stop valve mechanism in an I type oil gauge of an old type . 
- In the unlikely event that the gauge pipe breaks, the valve mechanism automatically operates to prevent the outflow of liquid. 
- The body uses brass, chrome plating finish, fluorocarbon rubber for seal packing, and pyrex glass for gauge pipe. 
KLM-AVIS type 
- The main body uses SUS 304, Teflon for seal packing, Pyrex glass for gauge pipe. 
- Compared with KLM-AVI type, chemical resistance is further improved.