Scissor-type stem diameter measurer

The invention discloses a scissor-type stem diameter measurer which mainly comprises a caliper and a scissor-shaped handle. The caliper is provided with a fixed external measuring jaw and a flexible external measuring jaw. The scissor-shaped handle is two cross rods which are connected by a rotating shaft so that opening and closing are facilitated, and the external measuring jaws can be conveniently controlled to clamp a sample to be measured. The far end of the handle is connected with the caliper via a rotating shaft. The caliper is provided with two external measuring jaws. The external measuring jaw of the "zero point" end of the caliper is fixed, and the other external measuring jaw slides on the caliper along with expansion and contraction of the scissor-shaped handle so that adjustment can be performed according to thickness of the sample to be measured. The stem diameter of a sugarcane is measured by applying the scissor-type stem diameter measurer, and the stem diameter of the sugarcane is clamped by the external measuring jaws on the caliper through opening and closing of the scissor-shaped handle so that the numerical value on the caliper is read according to distance between the two external measuring jaws, and an objective of rapidly and high-efficiently measuring the stem diameter of the sugarcane can be realized. The scissor-type stem diameter measurer has characteristics of being time-saving and labor-saving, easy to operate, convenient to carry and suitable for measuring samples with different thicknesses.