7 spherical cylindrical plano-convex lenses
Date: mid 20th Century
Inventory Number: 1998-1-0384b
Classification: Lenses
Dimensions:each: 4.5 × 4.7 × 0.2 cm (1 3/4 × 1 7/8 × 1/16 in.)
Description:
1998-1-0384b: 7 spectacle-shaped plano-convex, cylindrical lenses (showing astigmatism)