Mechanical apparatus lettered C, R, N
A red-chalk device gone over in pen, with a curved cradle, upright post and roller
The sheet is filled by a single mechanical apparatus drawn in red chalk and partly reinforced in pen. It has a curved, boat-like cradle at its base, a stout upright carrying a horizontal roller or bar, and hatched structural members, with reference letters marked on the body of the machine. The transcription supplies only those letters (C, R, N); no further explanatory text is given here.
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Apparatus with reference letters C, R, N
A large device is built around a curved cradle and a central upright that carries a horizontal roller. Bracing and framed panels are hatched in, and the machine's parts are keyed with the letters C, R and N. Further untranscribed markings appear on the sheet.