Thick measuring caliper of stem of plant

The utility model discloses a thick measuring caliper of stem of plant, its can simultaneous measurement irregularity cylinder two quadrature diameter values of same cross section. These slide caliper rule include fixed equilateral right angle " L a " chi and two movable chis of taking the masuring jaw, and the guide way has all been opened at two limit backs of fixed ruler, and an activity chi embolias from the lower part on a limit of fixed ruler, and a movable chi embolias from the upper portion on another limit of fixed ruler, and the masuring jaw thickness of two activity chis equals, is the half the of fixed ruler thickness, and just two activity dipstick metering claws are located the lower half and first one of two right -angle sides of fixed ruler respectively. To be surveyed the position card during use in fixed ruler right angle department, but fold the just data of the same cross section pairwise orthogonal diameter of direct read with two activity chis, easy operation is convenient, has guarantee