Optical Bridge Adjusting Pliers, US Optical Specialities Inc., Sargent & Co.

LaMotte Colorimeter Reagent Kit 3643-SC, Bromine & Iodine Test

VERNIER SOFTWARE COLORIMETER COL-DIN SI

Dunning Colorimeter

ZnSe Beam Combiner Optic 25.4mm X 3mm CO2 Laser Red Aiming Beam Engraver Cutter

The Lee Co. - P/N: LFVX0505750BD - Solenoid Valve

Vintage Klett Mfg. Co. Inc Filter #42 Colorimeter(?) Filter [2*U-92]

60-130W CO2 Laser Tube 49.2-65 in Borosilicate Glass Laser Cutter Tube