Model for Descriptive Geometry by A. Jullien - Angle of a Plane with Planes of Projection
date: label: date made
content: ca 1880
name: label: maker
content: Jullien, A.
notes: label: Description
content: Given plane APA’, c’ is a point on the intersection line of the plane with the vertical plane. Point b on the horizontal intersection of the plane is chosen so it that bc’ is perpendicular to PA. Connect b and c’ to from the red string. The horizontal projection of bc’ is bc and the vertical projection is cc’. By rotating bc’ about bc to the horizontal, point C<sub>1</sub> is found. Now angle cbC<sub>1</sub> is the angle of the plane with the horizontal plane. Similarly, the angle bC<sub>1</sub>C is the angle with the vertical plane.
label: Description
content: For more details, see COLL.1986.0885 and 1986.0885.01.01.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
topic: label: Subject
content: descriptive geometry
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Jullien Geometric Models
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0885.01.24
label: catalog number
content: 1986.0885.01.24
label: accession number
content: 1986.0885
objectType: label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 6.5 cm x 7.5 cm x 6.5 cm; 2 9/16 in x 2 15/16 in x 2 9/16 in