Mars 561703 Oval Scale rulers 300mm
front: 1:1 1:100 1:20 1:200
back: 1:25 1:250 1:50 1:500
Staedtler 561703AU 561 70-3 AU

10554175 4007817032312

Staedtler 561703 Oval scale rules AS1212-3 300mm scales
front: 1:1 1:100 1:20 1:200
back: 1:25 1:250 1:50 1:500

AS1212
Professional quality 
Made of white P.V.C 
Tough, flexible, climactically stable, and will not discolour or become brittle with age
Antiglare finish makes the scales easy to read
Manufactured with an engraving process:
Dividings and figures have the same accuracy as the die
Dividings and figures are sharper and deeper, and are therefore permanent
Line thickness of dividings are controlled to give maximum clarity