CN205102741U - Thick measuring caliper of stem of plant - Google Patents

Abstract

The utility model discloses a crop stem thickness measuring caliper, which can simultaneously measure two orthogonal diameter values of the same cross section of an irregular cylinder. This caliper consists of a fixed equilateral right-angle "L" ruler and two movable rulers with measuring claws. There are guide grooves on the back of both sides of the fixed ruler. One movable ruler is inserted from the lower part of one side of the fixed ruler, and the other is movable The ruler is inserted from the upper part of the other side of the fixed ruler. The thickness of the measuring claws of the two movable rulers is equal, which is half of the thickness of the fixed ruler. . When in use, the measured part is clamped at the right angle of the fixed ruler, and the data of the two orthogonal diameters of the same cross section can be read directly by closing the two movable rulers. The operation is simple and convenient, and the accuracy of the data is guaranteed.

Description

A caliper for measuring stem thickness of crops

technical field

The utility model belongs to the field of measuring tools and relates to a special vernier caliper which can directly measure two orthogonal diameters of the same cross section of an irregular cylinder

Background technique

At present, in the field of agricultural experimental research, crop stem thickness is an important indicator for evaluating crop growth status, and it is often measured in experiments. The crop stalks are all irregular cylinders, and it is usually necessary to measure two orthogonal diameters of the same cross-section at the same time for calculation, but there is no specific measurement tool at present, and the common vernier caliper needs to be measured twice, which is not only inefficient, but also Moreover, the two measurements cannot be guaranteed to be in the same cross-section, which increases the measurement error. Therefore, there is a need for a measuring tool that can simultaneously measure two orthogonal diameters of the same cross section of an irregular cylinder.

Contents of the invention

The purpose of the utility model is to provide a special caliper, which can accurately and simultaneously measure two orthogonal diameter values of the same cross section of an irregular cylinder.

The purpose of this utility model is achieved in that a kind of crop stem thickness measuring caliper comprises a fixed equilateral right angle "L" ruler and two movable rulers with measuring claws. Guide grooves are provided on the back of the two sides of the fixed ruler and the two movable rulers. One movable ruler is inserted from the upper part of one right-angled side of the fixed ruler, the other movable ruler is inserted from the lower part of the other right-angled side of the fixed ruler, and the two movable rulers are used for measuring claws. The thickness of the two movable rulers is equal to 1/2 of the thickness of the fixed ruler, so that the two measuring claws are respectively located on the upper half and the lower half of the two sides of the fixed ruler, so that the measuring claws of the two movable rulers and the fixed ruler are in the same cross section .

The operation is the same as that of a common vernier caliper. Move the movable ruler to directly clamp the crop measurement part at the right angle of the fixed ruler. After closing the two movable rulers, you can directly read the data of the two orthogonal diameters of the same cross section. The operation is simple and convenient, and it is guaranteed The accuracy of data measurement is improved, and the work efficiency is greatly improved while reducing measurement errors.

Description of drawings

The utility model will be described in further detail below in conjunction with accompanying drawing.

Fig. 1, Fig. 2 are respectively the front and back structural representations of the utility model;

Fig. 3 is a schematic diagram of a disassembled structure of the utility model.

detailed description

A kind of crop stem thickness measuring caliper, as shown in Fig. 1, Fig. 2, comprises fixed ruler (1) and movable ruler (2, 3), and fixed ruler is a right angle " L " ruler of equal length on both sides, and movable ruler has two with measuring claws. Wherein, as shown in Figure 3, the two movable rulers are all divided into a fixed cover plate part (2-2, 3-2) and a measuring claw part (2-1, 3-1), and the two parts are fixed with screws. Guide grooves are provided on the back of the two sides of the fixed ruler, and corresponding guide grooves are provided on the two movable rulers, and the movable ruler 2-1 is located at the lower part of the fixed ruler, and the fixed cover plate 2-2 is fixed from above; the movable ruler 3-1 is located at the upper part of the fixed ruler. The fixed cover plate 3-2 is fixed from the back. The two movable ruler measuring claws are all cut and flattened, and their thicknesses are equal and are 1/2 of the thickness of the fixed ruler, so that the two movable ruler measuring claws and the fixed ruler are in the same plane. When in use, remove the two movable rulers, clamp the fixed ruler at the right angle to the crop stem thickness measurement part, and then close the two movable rulers to obtain two orthogonal diameter values of the same cross section, and the two movable rulers are at the same position as the fixed ruler. plane, the accuracy of the measured value is higher.

Claims (1)

1. A caliper for measuring the stem thickness of crops, comprising a fixed ruler (1) and movable rulers (2, 3) with measuring claws, characterized in that: the fixed ruler (1) is an equilateral right angle with guide grooves arranged on the back of both sides " L" ruler, two movable rulers (2, 3) with measuring claws are respectively set on the upper and lower parts of the two sides of the fixed ruler through guide grooves, the thickness of the measuring claws of the two movable rulers is equal, and both are 1 of the thickness of the fixed ruler /2, and fixed by the cover plate (2-2, 3-2), each movable ruler can be moved independently, and the two movable rulers are placed on the same plane as the fixed ruler when measuring.