3 connectors for optical tube assemblies
Date: 1890-1910
Inventory Number: 2007-1-0362
Classification: Optical Accessory
Dimensions:longest: 7.1 × 2.4 × 2.4 cm (2 13/16 × 15/16 × 15/16 in.)
Description:
Three nickel-plated brass connecting tubes with knurled rings.