retroreflector
tubescientis 1 year ago
easy, it's a corner mirror, it's used by lazer distance measurement tools, so that a lazer beam will always reflect back to where it came from.
ollly666 1 year ago
retroreflector
tubescientis 1 year ago
easy, it's a corner mirror, it's used by lazer distance measurement tools, so that a lazer beam will always reflect back to where it came from.
ollly666 1 year ago