The larger size of the OPL spectroscope make it perfect for use at a bench or table top.
The OPL spectroscope has fixed slit and focus and it's larger size makes it ideal for tabletop and lab use. Comes with stand to hold firmly at perfect angle for illumination and viewing, and allows for stone to be rotated. Its stability, size, and ease of use gives great experience to students, with jewelers calling it a Teaching Spectroscope.
Dimensions: 4 1/8" x 1"