ClipArt ETC
"...consisting of six rhomb-shaped faces with the edges all of the equal lengths: the faces are perpendicular to the planes of symmetry." -The Encyclopedia Britannica 1910

Direct Rhombohedra

"...consisting of six rhomb-shaped faces with the edges all of the equal lengths: the faces are perpendicular…

"Illustrating fuse protection for voltmeter and ground detector and ground detector on a direct-current switchboard." —Croft 1920

Fuse Protection on Direct Current Swtichboard

"Illustrating fuse protection for voltmeter and ground detector and ground detector on a direct-current…

"The position of the helmet is a mark of distinction. The direct front view of the grated helmet belongs to sovereign princes and dukes." -Hall, 1862

Grated Helmet Direct

"The position of the helmet is a mark of distinction. The direct front view of the grated helmet belongs…

"The helmet without bars, with the beaver open, standing directly fronting the spectator, denotes a knight." -Hall, 1862

Open Helmet Direct

"The helmet without bars, with the beaver open, standing directly fronting the spectator, denotes a…

"Direct current self starting Cooper-Hewit mercury-vapor lamp." —Croft 1917

Cooper-Hewit Mercury Vapor Lamp

"Direct current self starting Cooper-Hewit mercury-vapor lamp." —Croft 1917

"A typical direct-current starting rheostat is illustrated [here]." —Croft 1920

Rheostat

"A typical direct-current starting rheostat is illustrated [here]." —Croft 1920