This antique marine parallel rule is made by Norton & Gregory Ltd and features the engraved initials for JWL.
Norton & Gregory Ltd were British manufacturers of drawing and mathematical instruments, appliances and materials.
This antique marine parallel rule is made by Norton & Gregory Ltd and features the engraved initials for JWL.
Norton & Gregory Ltd were British manufacturers of drawing and mathematical instruments, appliances and materials.
380 Hargreaves Street