Polypropylene. Small and handy gauge.
For easy measurement of the inner and outer diameter of hoses, tubes etc., in the range 1,5 to 16 mm diameter. Blue color.
Dimensions (l x w x h): 120 x 50 x 12 mm
Полезные мелочи для лабораторий, Schuett, англ., 2 стр., 150 kB.pdf