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Duplex Ruler

University College

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


Old Inventory Number = “uc42”; labeled “DUPLEX RULER”.

Dimensions (cm): Height = 3.5, Length = 45

Function: For measuring.


Associated Instruments:

Manufacturer: Duplex Ruler

Date of Manufacture:


Additional Information and References:

Historical Notes: