光具座中一種多用途的光學儀器，在光學實驗中用來支承各種光學元件，研究透鏡成像規律、焦距測定。并能搭制顯微鏡、望遠鏡等，供學生分組實驗用。
J2507 Light-Block
Light a seat in a multi-purpose optical equipment, optical experiments to support a variety of optical components, research imaging lens law, determination of focal length. And to be able to take a microscope system, such as a telescope for students to use the experimental group.