Black, circular pinhole screen. Screen measures 3" in diameter and is approximately 0.25" thick. Pinhole measures 0.06mm in diameter. Total length measures 4.6". Perfect tool for physics optics experimentation.
Black, circular pinhole screen. Screen measures 3" in diameter and is approximately 0.25" thick. Pinhole measures 0.06mm in diameter. Total length measures 4.6". Perfect tool for physics optics experimentation.