Here is a selection of pencils made by Ruwe Pencil Company of Greenwich, Connecticut, USA. Ruwe was purchased by Dixon in 1988. Please do not use images without permission.
Balboa 151 #3, hex with metal ferrule and eraser
(generic) 205 #2S, for drafting film, hex with metal ferrule and eraser. Opposite faces of the same pencil are shown.
These apparently were made for Keuffel and Esser.
Granite 555 #2-4/8, hex with metal ferrule and eraser
Heath 386 #2, hex with metal ferrule and eraser
Hospital 386 #2-4/8, and 385 #3, hex with metal ferrule and eraser
Quiz 444 #2 and #4/8, hex with metal ferrule and eraser. I am not sure what '4/8' means...
Quiz Drawing 800 HB, hex, no ferrule or eraser
Woodhue 620, 623, and 931, colored, hex with metal ferrule and eraser
Bundle of one dozen Quiz Drawing 800