
ELLIPSOGRAPH —
is the name of this simple device. It can be used to draw an ellipse with any ratio of the semiaxes. It is enough to set into the holes on the line of alignment pins to align the center of ellipsograph with the future centre of the ellipse and rotate the line by 360°. Parts of the device can be made of duralumin sheets, guides pins are made of steel.
Recommend to read
CHAIR SHIFTER
The limited size of the living area in the typical buildings awakened interest in versatile pieces of furniture. Cabinet from the wall, it became possible to extract the Desk or bed,...
AND BUCKET NEED A FUSE
From widely used household enameled bucket weakest point — flanging of the bottom: it often chipped enamel, and the metal begins to rust. Extend bucket life possible, protecting the...