Carpenter's joints, tools, and a red-chalk furnace
With the pen aphorism: 'Force is accidental weight.'
This inverted page carries several pen and red-chalk sketches: timber pieces cut with interlocking joints drawn in perspective, carpenter's tools, and working trestles, together with a furnace and a further diagram the transcription leaves indeterminate. A short pen note records the mechanical maxim that force is an 'accidental weight.' The red-chalk work at the foot of the sheet is faint and partly effaced.
On this page
Interlocking timber joints and carpenter's tools
Timber members are shown cut with interlocking joints (incastri) and drawn in perspective, alongside carpenter's tools. A caption names 'working trestles' (cavalletti da lavorare).
Aphorism: force is accidental weight
A single pen line records the mechanical maxim that force is an 'accidental weight' — a borrowed and transient power rather than an inherent property of a body.
Furnace drawn in red chalk
Near the foot of the sheet a rounded structure in red chalk is captioned as a furnace (forno), accompanied by a further diagram that the transcription does not resolve.