A ruler, sometimes called a rule or line gauge, is a device used in geometry, technical drawing, engineering and building to rule straight lines.
Engineering designers used (before the advent of CAD) devices with graduations marked on their edge called scales, when setting out or measuring length on a drawing.
They did not draw lines with their scales; they used set or T-squares when ruling a line.
FEATURES:
Material: Stainless steel
Type: Ruler
Size: Length: 15 cm, 30cm, 60 cm, 100cm
Color: Silver bottom + black scale
SPECIFICATION:
These rulers have the same tolerance and the same finish as above, but without the tap drill table on the back.
They do have the mm-inch table.
These rulers have a raised edge on the right hand side to make picking it up from a flat surface easy.
Steel rulers also feature easy to read extra large numbers and read even larger numbers for the decimals.
The 15 cm and 30 cm rulers will lift up all the way; the 60 cm and 100 cm rulers only lift halfway up.
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