The slide rule, pencil and magnifying glass are on the notebookThe slide rule, pencil and magnifying glass are on the notebook
An ordinary sheet from a notebook in a box with marginsAn ordinary sheet from a notebook in a box with margins
The slide rule, pencil and magnifying glass are on the notebookThe slide rule, pencil and magnifying glass are on the notebook
An ordinary sheet from a notebook in a box with marginsAn ordinary sheet from a notebook in a box with margins