Escapement of the Grand Hour
iOS app by Jaan Saar. Education · Jaan Saar
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.0
- Listing last refreshed
- 2026-09-06
View the original store listing
Store description excerpt
Inside a brass case sat an escapement, patiently letting seconds escape into the world one at a time, never two. That little component decided whether the train ran late, whether longitude was found, whether the astronomer caught the transit. We built an app for people who still believe this is the most beautiful engineering solution ever devised. Archive the beating hearts Verge and foliot. Graham's deadbeat anchor. The English lever. The marine detent that kept better time on a rolling deck than your bedside alarm does on solid ground. From crude forged iron of the 14th century to double-wheel chronometer modules inside observatory regulators, every specimen earns its own entry in your digital cabinet of curiosities. A technical passport for every mechanism Instrument type, maker, era, operating temperature range, pallet material. And something you will not find anywhere else: the steel mill, foundry, or ceramic kiln whose working day this specimen once measured. Industrial history, recorded in the teeth of a wheel. Maker Map - the geartrain, alive Trace power from mainspring barrel to balance. Swipe down to wind. Tap a node to hack the train. Drag a wheel and watch the whole chain fall apart. This is not a textbook diagram. It is running mechanics in the palm of your hand. VPH / Hertz Converter 18000 vibrations per hour equals 2.50 Hz, a half-second beat, and one very satisfied collector. The tool calculates frequency, beat duration, and theoretical daily deviation. Adjust the escape wheel tooth count, push the balance amplitude around, and watch precision respond. Fair warning: more addictive than it looks. Why this app exists Because quartz won, escapements lost, and almost nobody says so out loud. There are thousands of coin catalogs. Hundreds of stamp apps. For the device that literally invented the modern working day, there was not a single one. Now there is. Escapement of the Grand Hour is not a collection tracker. It is an archive of engineering culture, where every entry explains how one piece of brass outsmarted an entire century. Wind it. Watch it. Preserve it. Tick.
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