CN203629503U

CN203629503U - A simple plant seed length measuring instrument

Info

Publication number: CN203629503U
Application number: CN201320821218.4U
Authority: CN
Inventors: 宋立华; 张祚朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-13
Filing date: 2013-12-13
Publication date: 2014-06-04
Anticipated expiration: 2023-12-13

Abstract

The utility model discloses a simple plant seed length measuring instrument comprising a syringe push rod, a syringe shell and a slit. The side, which is marked with a scale line, of the syringe shell is provided with the slit in the push rod direction; the syringe shell side without the scale line is removed for forming a seed placing position. On can put a plurality of small seeds on the slit of the seed (such as mung bean) placing position side by side and then calculate the average value after measuring the total length. Therefore, the instrument can achieve the same effect as a vernier capliper. The simple plant seed length measuring instrument can be made with a disposable syringe, is low in cost and easy to manufacture, guarantees that measured data are accurate and clear, can be used for demonstration by a teacher, can be used for group experiments, can excite the operational ability and arouse the interest for science of students, and is a measuring teaching tool and studying tool easy to improve.

Description

A kind of vegetable seeds length simple measurer

Technical field

The utility model relates to the technical field of mathematics and scientific measurement knowledge, specifically a kind of vegetable seeds length simple measurer.

Background technology

On primary school mathematics and science class, need to learn the measuring method of some object length, for a regular object, can measure with traditional ruler, for the distance on map, can overlap and measure again with fine rule, and the diameter of how test amount ball? for pupil, be very difficult.And the use of vernier caliper will wait until that senior class could learn and use, in the face of pupil, how better to guide them to measure, also there is no special instrument.

Utility model content

The technical problems to be solved in the utility model, is for the deficiencies in the prior art, provide a kind of simple in structure, be easy to improved a kind of vegetable seeds length simple measurer.

In order to overcome the defect existing in background technology, the utility model solves the technical scheme that its technical matters adopts: a kind of vegetable seeds length simple measurer, formed by injector push-rod, syringe shell and slit, syringe shell has a side of scale mark to dig a slit along push rod direction, and excision does not have the syringe shell of scale mark one side to form seed lay down location.

Further, can and come on the slit of seed (as mung bean) lay down location multiple little seeds, after measurement entire length, average, have with vernier caliper play the same tune on different musical instruments wonderful.

The beneficial effects of the utility model are: the disposable syringe that has drawn from, with low cost, make simple, measurement data is accurately obvious, has both been applicable to teacher's demonstration, also can be for grouping experiment, the interest that excites students ' practical ability and possess a fondness for science is that one is easy to improved measurement teaching aid and learning aid.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

In figure: 1. push rod, 2. syringe shell, 3. scale mark, 4. slit, 5. seed lay down location.

Embodiment

A kind of vegetable seeds length simple measurer, formed by injector push-rod 1, syringe shell 2 and slit 4, syringe shell 2 has a side of scale mark 3 to dig a slit 4 along push rod 1 direction, is convenient to arrange and increasing friction force when slit is mainly used in placing seed; Excision does not have the syringe shell 2 of scale mark 3 one sides to form seed lay down location 5.When excision, retain the two ends of syringe shell 2 to increase steadiness.

To measure the diameter of mung bean as example, when use, a kind of vegetable seeds length simple measurer is lain against on desktop to the seed lay down location 5 by n mung bean chips with side-by-side on slit 4, push rod 1 is shifted onto with hithermost mung bean and contacted, reading registration, record, is the diameter of n mung bean, and then can obtain the diameter of a mung bean, for seed or the little ball of other plant, can measure in this way diameter (length), have with vernier caliper play the same tune on different musical instruments wonderful.

Finally should be noted that; above content is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection domain; although this embodiment part has been done to explain to the utility model; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, not depart from essence and the scope of technical solutions of the utility model.

Claims

1. a vegetable seeds length simple measurer, formed by injector push-rod (1), syringe shell (2) and slit (4), it is characterized in that: syringe shell (2) has a side of scale mark (3) to dig a slit (4) along push rod (1) direction, excision does not have the syringe shell (2) of scale mark (3) one sides to form seed lay down location (5).