Cover (lid), photography accessory

Cover (lid), photography accessory
Title
Cover (lid), photography accessory
Date 
1850-1870
Medium 
Wood, brass
Dimensions 
Overall: 1 x 7 x 5 1/2 in. ( 2.5 x 17.8 x 14 cm )
Description 
Flat, rectangular wooden cover with curved strip of brass attached in the middle with a single screw so that it rotates freely; appears to be cover for sensitizing box slide INV.361.
Object Number 
INV.362
Due to ongoing research, information about this object is subject to change.
Creative: Tronvig Group