Inner ruler laying method ruler pressing device for capacity measurement of vertical metal tank

The utility model belongs to the technical field of measuring devices, and particularly relates to a vertical metal can capacity measurement inner ruler laying method ruler pressing device which comprises a support and a ruler pressing roller, the ruler pressing roller is rotationally connected with the support, a front ruler guiding groove and a rear ruler guiding groove are fixedly connected to the support, and the ruler pressing roller is located between the front ruler guiding groove and the rear ruler guiding groove. The ruler can sequentially pass through the front ruler guide groove, the ruler pressing roller and the rear ruler guide groove, and the ruler is pressed through the ruler pressing roller. By adopting the device, the field detection can be carried out by two persons instead of three persons; the detection efficiency is improved, and the detection time is 1/3 of the original time; the pressure bar roller is arranged, the steel tape is pressed through the pressure bar roller, it can be guarant