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The circular baluster is a modern Italian design. Arranged side by side they are typically used on balconies, Attics and staircases.

Circular Baluster

The circular baluster is a modern Italian design. Arranged side by side they are typically used on balconies,…

The Doric capital is an Italian Renaissance design consisting of the abacus, which is square and the echinos, which is circular.

Doric Capital

The Doric capital is an Italian Renaissance design consisting of the abacus, which is square and the…

Equal circles inside and tangent to the outside circle, also tangent to each other

Circle to Circle Tangents

Equal circles inside and tangent to the outside circle, also tangent to each other

"Cunina rhododactyla, one of the Narcomedusae. c, circular canal; h, "otoporpae" (ear-rivets) or centripetal process of the marginal cartilaginous ring connected with tentaculocyst; k, stomach; l, jelly of the disc; r, radiating calan (puch of stomach); tt, tentacles; iw, tentacle root. The lappets of the margin of the disc, separated by deep notches, above which (nearer the aboral pole) the tentacles project from the disc (not marginal therefore), are characteristic of many Narcomedusae and Trachomedusae. Cartilaginous strands (the mantle rivets or peroniae) connect the tentacle root with the solid marginal ring." — Encyclopedia Britannica, 1893

Cunina Rhododactyla

"Cunina rhododactyla, one of the Narcomedusae. c, circular canal; h, "otoporpae" (ear-rivets) or centripetal…

Illustration of the method of finding the projection, in the form of an ellipse, of the top of a cylinder greatly inclined to a plane.

Projection of Cylinder

Illustration of the method of finding the projection, in the form of an ellipse, of the top of a cylinder…

Projections of a cylinder inclined to horizontal plane.

Projections of Cylinder

Projections of a cylinder inclined to horizontal plane.

"Thus, if we suppose the conducting wire be placed in a vertical situation, as shown, and p, n, the current of positive electricity to be descending through it, from p to n, and if throught the point c in the wire in the plane NN be taken, perpendicular to p, n, that is in the present case a horiczontal plane, then if any number of circles be described in that plane, having c for thier common centre, the action of the current on the wire on upon the north pole of the magnet, will be to move it in a direction corresponding to the motion of the hands of a watch, having the dial towards the positive pole of the battery." -Comstock 1850

Circular Motion of the [Electric] Fluid

"Thus, if we suppose the conducting wire be placed in a vertical situation, as shown, and p, n, the…

The circular evolute spiral is a wave pattern that mimics the wave of the sea. It is a round circular panel.

Circular Evolute Spiral

The circular evolute spiral is a wave pattern that mimics the wave of the sea. It is a round circular…

A Greek shield.

Greek Shield

A Greek shield.

This key is designed in an Italian style. It has a circular top with a leaf scroll all around and an initial in the center.

Key

This key is designed in an Italian style. It has a circular top with a leaf scroll all around and an…

A circular leaf border.

Circular Leaf Border

A circular leaf border.

A nearly circular leaf.

Orbicular Leaf

A nearly circular leaf.

"...consists of a circular, multipolar field magnet, inclusing a cylinder armature with coils wound back and forth in grooces on its face." -Atkinson 1903

Altenating Current Motor

"...consists of a circular, multipolar field magnet, inclusing a cylinder armature with coils wound…

A pendentive is a constructive device permitting the placing of a circular dome over a square room or an elliptical dome over a rectangular room. The pendentives, which are triangular segments of a sphere, taper to points at the bottom and spread at the top to establish the continuous circular or elliptical base needed for the dome. In masonry the pendentives thus receive the weight of the dome, concentrating it at the four corners where it can be received by the piers beneath.

Diagram of Pendentives

A pendentive is a constructive device permitting the placing of a circular dome over a square room or…

"[This illustration] shows the path of a stone thrown obliquely from the hand. The propelling force sends it in a straight line to A, and would take it on in the same direction to B, were it not that, as soon as its velocity becomes sufficiently diminished, gravity and the air's resistance give it a circular motion to C, and finally bring it to the earth at D." —Quackenbos 1859

Projectile Motion of a Stone

"[This illustration] shows the path of a stone thrown obliquely from the hand. The propelling force…

Two arrangements of pulley: crossed belt and uncrossed belt. The pulleys are constructed with two circles that have the radii labeled and tangent lines drawn (strings).

Pulley

Two arrangements of pulley: crossed belt and uncrossed belt. The pulleys are constructed with two circles…

"A circular wheel, with teeth on the circumference, by which it can be moved or its motion stayed." — Williams, 1889

Ratchet-wheel

"A circular wheel, with teeth on the circumference, by which it can be moved or its motion stayed."…

This illustration includes numerous types of saws: a. Circular saw (right-hand and left-hand saws have the teeth running opposite directions); b. section of circular saw showing flange at c; d. concave saw; e. circular saw with inserted teeth; f. mill-saw; g. ice-saw; h. cross-cut saw; i. band-saw; j. rip-saw; k. hand-saw; l. panel-saw; m. pruning-saw; n. whip-saw; o. wood-saw; p. keyhole or compass-saw; q. back-saw; r. bow-back butchers' saw.

Collection of Saws

This illustration includes numerous types of saws: a. Circular saw (right-hand and left-hand saws have…

Isometric of a prism with a semicircular top.

Prism With Semicircular Top

Isometric of a prism with a semicircular top.

A Highland sgiath.

Highlands sgiath

A Highland sgiath.

A shield from the Bronze Age.

Bronze Age shield

A shield from the Bronze Age.

"A circular box used for covering and protecting a seal. Old documents were commonly sealed by means of a ribbon which passed through the parchment, and to which was affixed a large circular wax seal, not attached to the parchment itself, but hanging below its edge. The skippet used to protect such a seal was commonly turned of wood, like a shallow box, with a cover formed of a simple disk of wood held to the box by strings passed through eyelet-holes." -Whitney, 1889

Skippet - Open Box with a Seal Inside

"A circular box used for covering and protecting a seal. Old documents were commonly sealed by means…

"The targe of the Scottish Highlands, composed of wood and leather, and studded with brass decoratively applied, is a reversion to the early circular form."—Finley, 1917

Highland targe

"The targe of the Scottish Highlands, composed of wood and leather, and studded with brass decoratively…