Can measure to within one centimetre. Ruler Flat aluminium 30cm ruler with rubber bottom. Ruler Same as above, but length of ruler is 50cm. Tape Measure Yellow platified linen tape measure with metallic dots. Rolling Steel Tape Measure Steel Tape Measure with metallic dots until 150cm in a black housing with push button.
Grooves mark every centimetre along opposite edge.
Braille marking along each edge. Non-slip pads are glued to the back side of ruler.