Studies of Circles and Wheels, Possibly Mechanisms
Red-chalk circles with axles and radiating lines, tentatively read as mechanisms
The sheet bears faint red-chalk studies that the catalogue tentatively identifies as mechanisms. Two large circles, each with a marked centre and a smaller inner circle, are crossed by straight rods and radiating or tangent lines, suggesting wheels turning on axles. No text accompanies the drawings, and their reading as a mechanism is left uncertain.
On this page
Wheel on an axle with radiating rods
An upper circle carries a central hub crossed by a straight rod that runs off to a smaller disc at the left, with further lines radiating from the centre. The assembly reads like a wheel mounted on an axle.
Concentric circles with centre and tangent lines
A lower circle encloses a smaller concentric circle about a marked centre, cut by straight lines that pass through or graze it as tangents and diameters. The construction is geometric in character.