Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo - Alamy

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Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy
Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Some wooden rulers do not start with 0 at the edge, but have it set in a few millimeters. How could this improve the accuracy of the ruler? - Quora

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Ruler rulers length numbers straight hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Ruler rulers length numbers straight hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

One centimetre hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Numbers 0 1 2 3 4 hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

White Plastic Rulers - Baldwin School Supply

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

30 cm ruler hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

One centimetre hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Plastic ruler hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

0 3 26 28 hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Cm ruler hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Cm ruler hi-res stock photography and images - Alamy

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

BVDA - Photograhic rulers and scales

Rulers. White plastic ruler showing 0-4 c m on one edge and 26-30 on other  edge. ) and 30 in red, other numbers in black. Fills frame Stock Photo -  Alamy

Why don't rulers start their count at the edges? - Quora