Yellow filter

[Mahnaz Mansourpour]

Hello all,

We are missing the yellow filter for the microscope sitting across from 
Nikon. Have you seen it?
The size of this filter slightly larger than the one we have so please 
if you know the where about of the filter  let me know. If the part is 
broken,  leave me the broken parts- at this time is easier for me to fix 
a broken part till I get  a new one made.

mahnaz