Quality control box for measuring the inner and outer diameter of medical tubes from 10 mm to 13 mm:

Inside the box, there are 31 rods (pin gage) with a height of 8 cm with a difference in diameter of one tenth of a millimeter of 0.1 of each other.

With the desired instrument, the inner diameter of the tubes is measured with a negative difference of two hundredths – 0.02 mm.

Also in the mentioned box, two numbers (wire gauges) are placed to control the outer diameter of the tubes. One of the wire gauges is used as a holder for quality control pins and a number of wire gauges are used as a quality control tool and measuring the outer diameter.

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