The Panel 16 Color Vision Test includes two sets of 16 test caps and 17
restriction rings with one of the caps being a "pilot". The diameter of
the stimulus area is 1.3" (3.3 cm), and can be reduced by using dark
gray restriction rings with an opening of 0.47" (1.2 cm) in
diameter.Acrylic case includes a cloth storage pouch. Travel tube comes
with black cloth. Comes with recording forms and instructions.