Adapter 332208 (33-22-08) for 1/2" square cuvette for Spectronic 21

Description

Cuvette Adapter 332208 for Spectronic 21 to accommodate 1/2" square cuvettes. Fits into the Universal Test Tube Holder built into the main instrument. Required for short cuvettes 45-48 mm tall. Needed, among others, for checking the unit with Spectronic Standards included in the 333150 set (not included).
Round opening at the top is just under 1/2”. (A round 1/2" test tube will NOT fit through this opening.) Round opening at the bottom is slightly smaller. Please see the photos for the exact measurements.
New. Not in original box.
I also have the tungsten light source listed--see separate auction:
Replacement bulb/light source 333307 (33-33-07) for Spectronic 21 10W 6.70V.