... techniques of optics, precision machinery, electronics and micro-camera technology, and devotes to nondestructive inspection and cavity internal ... used in factories producing cylinder, boilers, testing organizations for special equipment, testing stations for special gas, such as Liquefied gas, natural gas, ... : up and down, left and right are ≥ 120 °4. CCD chip: SONY1 / 6", Color, 2lux, 5. Pixels: 47 ...