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
Alternative Name:
Primary Materials: Metal
Markings:
Old Inventory Number = “uc42”; labeled “DUPLEX RULER”.
Dimensions (cm): Height = 3.5, Length = 45
Function: For measuring.
Condition:
Associated Instruments:
Manufacturer: Duplex Ruler
Date of Manufacture:
Provenance:
Additional Information and References:
Historical Notes:
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