3803A
STOP-SMEAR DRAFTING POWDER - 2-1/2OZ - NOS - VINTAGE - It was used in drafting and blueprinting to prevent smearing and keep drawings clean.
BOOM23BJ
STOP-SMEAR DRAFTING POWDER - 2-1/2OZ - NOS - VINTAGE - It was used in drafting and blueprinting to prevent smearing and keep drawings clean.