We would like to find a visual spectroscope: MK1A or
Optica-BC prism type, or similar homemade spectroscope
for public demonstration & general club use. Would also
consider any well made homemade diffraction grating type.
Please let me know what you have to offer so we can
consider our options, but we would like to find & purchase
something within a couple of weeks if possible. Please
enclose a pic if possible along with condition report.
We will pay shipping if required.