✔ Made of high quality PMMA.
✔ Waterproof finish. No glue or adhesive is included.
✔ Easy to read viewing bubble ( the bubbles can be gathered within 2 seconds after impact ).
✔ Bubble in the middle is in a balanced state. Crystal-like transparent, Light transmittance up to 92 percent.
✔ Can be used to level any surface, ideal for Photographic equipment, optoelectronic equipment, electrical appliances, washing machines, etc.