Top reading rule using blades with directional arrows

Details Top reading rule using blades with directional arrows Top reading rule using blades with directional arrows

G - Physics

01

B

33/154

G01B 3/10 (2006.01)

Patent

CA 1233977

ABSTRACT A top reading rule has a coilable blade with measuring indicia on both surfaces thereof. On its surface visible through the top reading window, the measuring indicia are offset from the outer end thereof and includes a longitudinally extending central band of a color distinct from the background and directional pointers spaced along the length of the band of a color distinct from that of the band. The pointers indicate the direction of increasing numbers so that a user may readily determine the length represented by graduations intermediate the numbers.

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