A piece of pasteboard or thick paper, prepared for various uses.

Card

A piece of pasteboard or thick paper, prepared for various uses.

"Three principal parts, the card, the needle on its lower suface, and the case. The whole is enclosed in the compass-box, or binnacle. the term compass is said to have been applied to the instrument because the card involves or compasses the whole plane of the horizon, or because the needle indicates the whole circle of possible variations of direction. The surface of the card is divided by radiating lines into 32 parts, each containing 11 degrees." — Encyclopedia Britannica, 1893

Compass Card

"Three principal parts, the card, the needle on its lower suface, and the case. The whole is enclosed…

"Plan and Transverse Section of Sir William Thomson's Compass-card. B, Corrector for quadrantal error; C, Box for corrector; a, Aluminium boss; b, Central cap of sapphire; c, Cords connecting rim and boss; d, Magnets; e, Threads connecting magnets; f, Aluminium rim; f, Cords supporting magnets; g,g', Knife edges for gimbals." — Encyclopedia Britannica, 1893

Compass Card

"Plan and Transverse Section of Sir William Thomson's Compass-card. B, Corrector for quadrantal error;…

An illustration of an addressed and stamped envelope.

Addressed & Stamped Envelope

An illustration of an addressed and stamped envelope.

A card and coin balanced on one finger, with the other hand poised to flick it off.

Hands and card

A card and coin balanced on one finger, with the other hand poised to flick it off.

"On the top of a short pillar is placed a card, and on the card a brass bal. Beside the pillar is fixed a steel spring, with an apparatus for drawing it back. If the spring is drawn back and the suddenly released, it will drive the card from the top of the pillar, while the ball in consequence of its inertia will retain its place." —Quackenbos 1859

Inertia Demonstration

"On the top of a short pillar is placed a card, and on the card a brass bal. Beside the pillar is fixed…

An illustration of a man reading a Valentine's Day letter.

Man Reading Letter

An illustration of a man reading a Valentine's Day letter.