您好, 歡迎來到化工儀器網(wǎng)
產(chǎn)品簡(jiǎn)介
詳細(xì)介紹
TE220
Back Focus Test Chart (36 cycles with corner stars)
The TE220 is designed for adjustment of
camera lenses and checking back focal
distance. It consists of a large Siemens star in
the center and four smaller ones positioned
in the corners of the test chart.