Hourglass.

Prepare evidence for Hourglass review

Buyer translation: this reference page maps the mark to a tool, system, control, deployment, or evidence question. sand falling through the waist · Hourglass — a reference page in the Time & cadence register.

register 14 · Time & cadence· slug hourglass· family atom ⌛ · best-fit emoji
01 ·

Promise. atom

The contract this mark binds — derived, not asserted.

Hourglass — a reference page in the Time & cadence register.

Answers: What is Hourglass in the Planisphere corpus library?

02 ·

What this is.

twelve marks · when measurement happens · same construction · 200×200 · integer geometry · currentColor + brass-deep

Use. sand falling through the waist.

Source. two triangles + brass falling sand.

Register. 14 · Time & cadence — one of the ten registers of the PLANiSPHERE corpus library.

03 ·

See it work.

Evidence record you can check — not code you have to trust.

Planisphere measures your tool deployment against Hourglass and seals the result into a signed, Merkle-rooted evidence record. The grade recomputes on your own hardware; the model state never crosses the boundary.

Check whether our model changed →See how a record is checked
04 ·

The board that carries this.

Related marks, and the surface this one funnels to.

Hourglass is measured into the same evidence record as every other mark in the Time & cadence register. That measurement becomes compliance-ready buyer evidence at /trust-packet.

Calendar reg 14 · days on a grid Epoch boundary reg 14 · before-and-after partition Escapement reg 14 · gear teeth + anchor pallet Half-life curve reg 14 · exponential decay marking the midpoint
05 ·

Routes here from.

Where this mark is referenced in the Planisphere surface.

About

Any internal link in the Planisphere site that names "Hourglass" canonicalises here.

06 ·

Sibling marks. Time & cadence

Same register · same construction.
Sundial
gnomon casts shadow on the dial
half-circle dial + gnomon + brass shadow
Escapement
gear teeth + anchor pallet
circular gear with teeth + brass pallet
Atomic clock
cesium hyperfine transition
nucleus + 3 elliptical electron orbits
Calendar
days on a grid
5×5 grid with one brass day marked
Epoch boundary
before-and-after partition
vertical brass line + before/after dots
Tick mark
one increment on the ruler
ruler + one prominent brass tick
Meridian crossing
sun across the local meridian
horizon + sun overhead + brass meridian line
Solstice line
sun at its furthest from the equator
horizon + sun at extreme + brass extreme indicator
Julian day count
continuous day-numbering
number-line + brass index
Planck tick
the smallest meaningful interval
tiny dot + brass magnifying-frame around it
Half-life curve
exponential decay marking the midpoint
axes + curve + brass half-mark

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