Comparator for visual colour grading. Can be used to check liquids
such as varnishes, solvents, reagents, oils, etc.
With Disc: A Range:1,2,3,4,5,6,7,8,9. 10023-00
With Disc: B Range:10,11,12,13,14,15,16,17,& 18. 10023-01
With A & B both discs. 10023-02