Lance Straight Edge Ruler EM - 30cm x 2.54cm

Lance Straight Edge Ruler EM - 30cm x 2.54cm. Calibrated in centimeters & inches on one side. Priced per ruler.

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Lance Rulers

Calibrations are on two edges, on one side. Millimeters to Centimeters on the top edge. Inches, in 16ths, on the bottom edge.

LANCE 30CM X 2.54CM STRAIGHT EDGE (METRIC/ENGLISH) RULE

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Lance Rulers

Lance Straight Edge Ruler EM - 30cm x 2.54cm

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Why don't we set the speed of light to exactly 300 million meters per second and 1 meter to 1/300,000,000? - Quora

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