Observed arrival · 2026-10-27
Hammer of Stone trains the eye—and the judgment behind the measurement
An iPhone and iPad trainer helps sculptors practise reading twelve types of measuring gauge and judging fit.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Sculptors learning practical measurement and fit
- Worth noticing
- Four drill formats cover gauge reading, zero drift, impossible recorded values, and accept/rework/reject fit decisions.
Field notes
The homepage lays out four exercise modes, from reading a gauge and estimating uncertainty to spotting a zero offset or an impossible recorded value. Its fit exercise uses hole and shaft codes across eight size bands. The site also describes instrument guides, a metrology glossary, and progress tracking with ten laurels named after Greek masterpieces; it says progress stays on the device.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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