Black ruler made of a pair of long, round rods; measurement indicators in both cm and inches, one set on each side; 2 rounded silver metal ends for rollers underneath to move freely; knobbed screw holds rulers in place; patent number no longer legible.
Accession Number: 2009.uc.42
Primary Materials: Metal
Old Inventory Number = “uc42”; labeled “DUPLEX RULER”.
Dimensions (cm): Height = 3.5, Length = 45
Function: For measuring.
Manufacturer: Duplex Ruler
Date of Manufacture:
Additional Information and References: