comparators, 9x and 12x
Date: circa 1953
Inventory Number: 1997-1-1769c
Classification: Comparator
Subject:
Maker: Edmund Scientific Corporation (1950 - 2000)
Cultural Region:
Place of Origin:
Dimensions:
each: 3.8 × 3.9 × 3.9 cm (1 1/2 × 1 9/16 × 1 9/16 in.)
box: 5.1 × 8 × 5.5 cm (2 × 3 1/8 × 2 3/16 in.)
Accessories: box; instruction sheet; quality resolution test chart
Description:
Two identical comparators (i.e. magnifier for viewing film) of different power (one is scratch "9x" the other "12x"). They are both of a conical shape and stored in a purple box.
Signedon instruction sheet: Edmund Scientific Co.
ProvenancePurchased by David Wheatland from Claus Gelotte, Inc., Nov. 10, 1953. Donated to CHSI, Feb. 24, 1992.
