Signedon safety edge: SPIRO
Inscribedon box: (illustration on the left) 12" / safetyedge (R) / A uniquely designed tool / that assures accurate and / accident free cutting! / (Patent pending) / Manufactured by Brownstone Products, Inc., Atlanta, Goergia
on side of the box: S
FunctionThese safety edges provide a straight edge for drafting and a safe straight edge for cutting.
ProvenanceLionel Spiro, Brookline, MA; Gift to CHSI, 2014.