Cylindrical slide rule, ends are plastic simulated to look like dark wood, with printed paper tables on the main drum and the spiral logarithmic line, printed on paper, on a wide sliding collar around the drum. A brass, horizontal fixed scale runs from one end to another. Rectangular wooden base, box-hinge lid. Includes brass angled rod for holding instrument, trade card, warning on proper use, and booklets.
Matériel
"FULLER CALCULATOR MADE IN ENGLAND." on pointer.
"FULLER'S SPIRAL SLIDE RULE" amongst lines on collar.
