Optometrics MC1-04, 6-0104 Mini-Monochromator

The Standard Mini-Chrom (MC) is a manual unit which utilizes a micrometer for wavelength selection and readout. Turning the micrometer head causes, via a precision sine bar drive, rotation of the diffraction grating which positions the desired wavelength at the exit slit.
Specifications:
-wavelength range: 500 nm-1.2U
-serial no. 004327
-cal. 1 NM/DIV
-model no. MC1-04