Surprise me

A sine quadrant hanging on its plumb line, its grid of sixty divisions crossed by red semicircles and a finely graduated arc.
Room
Size
View

Golden Age

Sine Quadrant

No. 9 of 20 · free · 300 dpi

What you seeA sine quadrant hanging on its plumb line, its grid of sixty divisions crossed by red semicircles and a finely graduated arc.

What it meansDeveloped in the Islamic world, the sine quadrant solved trigonometry by sight. With a thread and a bead, its users found the time of day and the hours of prayer.

Where it worksClean geometry for a kitchen, a hallway or an office.

Pin it
2:3 · 7200 × 10800 px4×6 · 8×12 · 12×18 · 16×24 · 20×30 · 24×36 in
3:4 · 5400 × 7200 px6×8 · 9×12 · 12×16 · 18×24 in
4:5 · 7200 × 9000 px4×5 · 8×10 · 16×20 · 24×30 in
11:14 · 3300 × 4200 px11×14 in
A-series · 7023 × 9933 pxA5 · A4 · A3 · A2 · A1

Everything is one ZIP: every shape and size, the phone wallpaper, the SVGs and a printing guide.

← PreviousNext →

More from Golden Age

All 20 prints
A vertical sundial set into a pointed niche in a stone mosque wall, with its hour lines, the equinox line in blue, the solstice curves in red and the gnomon's shadow across the plate.Wall DialNo. 10
A diagram of a water-driven castle clock: a ring dial, a crescent moving along its rail, rows of doors that open hour by hour, lit roundels and a cutaway reservoir with its float.Castle ClockNo. 11
A sheet of regular polygons, among them the hexagon, the pentagon, the octagon and the twelve-sided figure, each shown with the circles and crossing arcs of its compass construction and its corners marked in red.Compass WorkNo. 12
A cross-section of the eye with its coats, lens and optic nerve, receiving a cone of rays from a row of points.Visual ConeNo. 13
Parallel rays of light striking a parabolic mirror and meeting at its focus.Burning MirrorNo. 14
Thirty days of one lunar month set out as a table, each cell holding the moon a little further through its phases, from the dark new moon to full and back to a last thin crescent.Lunar TableNo. 15
The earth at the centre of nested circles for the moon, Mercury, Venus, the sun, Mars, Jupiter and Saturn, ringed by the sphere of the fixed stars.Seven SpheresNo. 16
The sun lighting the earth, whose cone of shadow holds a copper-red moon, with the moon's orbit traced around it.EclipseNo. 17

You might also like

A grid of lanterns drawn in fine gold line on deep plum, each in its own ruled cell like a page of drawings. Every lantern holds a single point of warm light.Lantern StudiesRamadan & Eid · No. 28
A cream four-point star sits in the upper half of a midnight ground inside a thin gold ring. Fine grey lines of different lengths radiate from it, and every eighth line runs in gold to the edge of the frame.North StarCelestial · No. 15
The stars of Pegasus rising over low dunes under a dusk sky, with Enif marked in gold and its names set on the land below.EnifStar Names · No. 40
The bare branches of a winter tree reach across a pale sky, a gold crescent caught among them.Bare BranchesHilal · No. 59
An empty prayer mat lies on a flat city rooftop just after sunset, the sky still burning orange above a skyline of domes and minarets.RooftopFive Prayers · No. 17
A single half-palmette at monumental scale, deep blue with a gold inner line and filled with a fine gold scroll and coral blossoms.Half-PalmetteArabesque · No. 12
A small repeat of jasmine sprigs in cream on squares of cobalt and deep blue.JasmineSigns of Home · No. 27
A single wooden chair stands against a bare wall, lit low from the left so that its shadow climbs the wall beside it. A red plane covers the top right and a violet one the floor at the left.A Chair and its ShadowColour Block · No. 10