Glass Slide with Ruling
name: label: maker
content: Fasoldt, Charles
notes: label: Description
content: Glass slide ruled with 10,000 to an inch on a Charles Fasoldt ruling machine. It came to the Smithsonian from Dudley Fasoldt, Charles Fasoldt’s nephew and successor.
label: Description
content: Charles Fasoldt (1819-1889) was born in Dresden, served an apprenticeship as a clock and watchmaker. After Fasoldt’s involvement in an unsuccessful 1849 attempt to overthrow the Saxon king, he and his family moved to the United States, settling in Rome, New York, and then, in 1861, in Albany. In the late 1870s, Fasoldt began producing finely ruled test plates to resolve the resolving powers of microscope lenses. The ruling engine he used for this purpose is also in the Museum collections.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.313398
label: catalog number
content: 313398
label: accession number
content: 184494
objectType: label: Object Name
content: slide containing ruling
physicalDescription: label: Measurements
content: overall: 2 1/8 in x 3 in x 2 3/16 in; 5.3975 cm x 7.62 cm x 5.55625 cm