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Collection Record Detail

Object Name
Ruler
Object Number
1971-02-45
Description
Wooden ruler with brass hinge at one end and brass cap at other end. Ruler rotates at hinge to double in length. Brass cap at one end can then slide outward to further extend length of ruler. Track carved into backside of ruller ot allow brass cap to extend.
Category
Tools and Equipment for Science and Technology
Maker
Date Made
ca. 1900
Dimensions
6" folded x 12" unfolded with 5" sliding extension
Materials
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