Vintage 60s brass letter opener/ruler marked The Drolson Company, inc. Property management/ Real estate, Minneapolis, MN. 

Cool old desk/ office accessory, was an advertising promotional giveaway. 

Measures 8” long, marked to measure 6”. Has 2 recessed spots for thumb while opening envelopes. 

Well used, marked “hans” in back by original owner, very nice vintage shape.