Objects

Viewing Record 56 of 114
Previous Record  Next Record
Switch Views: Lightbox | Image List | List

Rothenaicher's sehprufungsscheiben (discs for examining visual acuity)
TEST CHARTS
near vision test
Europe:
Pre-1920s
card; paper
overall: 130 mm

Set of two pairs of overlapping rotatable discs bearing Landolt rings visible through an aperture with a single larger ring pasted on the reverse, one pair held together with the other by small fabric looped tag. Together with a 1920s Library envelope overpasted with instructions in German and French.


2015.266

Related Media


2015.266.jpg

2015.266b.jpg

2015.266c.jpg

2015.266d.jpg

2015.266e.jpg

Browse by