SU37861A1 - Conveyor - Google Patents

Conveyor

Info

Publication number
SU37861A1
SU37861A1 SU131852A SU131852A SU37861A1 SU 37861 A1 SU37861 A1 SU 37861A1 SU 131852 A SU131852 A SU 131852A SU 131852 A SU131852 A SU 131852A SU 37861 A1 SU37861 A1 SU 37861A1
Authority
SU
USSR - Soviet Union
Prior art keywords
angle
inscribed
central
arc
protractor
Prior art date
Application number
SU131852A
Other languages
Russian (ru)
Inventor
Е.Н. Халютин
Original Assignee
Е.Н. Халютин
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Е.Н. Халютин filed Critical Е.Н. Халютин
Priority to SU131852A priority Critical patent/SU37861A1/en
Application granted granted Critical
Publication of SU37861A1 publication Critical patent/SU37861A1/en

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  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Description

Инструменты и приборы дл  измерени  и построени  углов основаны на измерении дуги центрального угле или хорды, на которую опираетс  этот цеитральный угол. Предлагаемый транспортир осно ан на измерении не центральных углов, а вписанных, с целью получени  удвоекной точности промера.Instruments and instruments for measuring and building angles are based on measuring the arc of a central angle or chord on which this zeitral angle rests. The proposed protractor is based on the measurement of not central angles, but inscribed, in order to obtain double measurement accuracy.

Как известно из геометрии, центральный угол измер етс  дугой, на котррую он опираетс , а вписанный угол-половиной дуги; следовательно, при одном диаметре круга вписанный угол будет измер тьс  дугой в два раза длиннее, чем тот же угол, если его измер ть, как центральный. Отсюда следует, что измер ть угол, как вписанный, будет можно в два раза точнее, чем центральный.As is known from geometry, the central angle is measured by the arc on which it rests, and the inscribed angle is half the arc; therefore, with the same circle diameter, the inscribed angle will be measured by an arc twice as long as the same angle, if measured as the center angle. It follows that the angle, as inscribed, will be measured twice as accurately as the central one.

На чертеже изображен общий вид транспортира.The drawing shows a general view of the protractor.

Прибор состоит из металлической или какой-либо другой пластинки в виде кольца. На внутренней грани кольца на полуокружности нанесены делени  дл The device consists of a metal or some other plate in the form of a ring. On the inner side of the ring, semicircles are divided into

промера углов, как вписчнных по отношению окружности шкалы.measure angles as written in relation to the circumference of the scale.

Дл  измерени  угла накладывают прибор , таким образом, чтобы вершина угла совпадала с окружностью в той части, где нет делен-«й, а однп сторона с нулевым делением; тогда деление против другой стороны покажет величину угла.To measure the angle, a device is applied so that the vertex of the angle coincides with the circle in the part where there is no divide and one side with zero division; then the division against the other side will show the value of the angle.

Применение предлагаемого транспортира может быть таким же широким, как и обычного, при составлении плана по румбам, при разных геометрических построени х , а также дл  артиллерийских надобностей.The use of the proposed protractor can be as wide as usual when drawing up a plan for points, with different geometric constructions, as well as for artillery needs.

Предмет изобретени .The subject matter of the invention.

Транспортир дл  измерени , отличающийс  тем, что он выполнен в виде кольца, на внутренней грани которого по окружности нанесены делени  от 10 до 90° с целью промера углов не как центральных по отношению к окружности шкалы, а как вписанных, и амым получени  удвоенной точности промера.Measurement protractor, characterized in that it is made in the form of a ring, on the inner face of which circumferences are applied from 10 to 90 ° in order to measure angles not as central to the scale circumference, but as inscribed, and to obtain double measurement .

SU131852A 1933-07-13 1933-07-13 Conveyor SU37861A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU131852A SU37861A1 (en) 1933-07-13 1933-07-13 Conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU131852A SU37861A1 (en) 1933-07-13 1933-07-13 Conveyor

Publications (1)

Publication Number Publication Date
SU37861A1 true SU37861A1 (en) 1934-07-31

Family

ID=48353919

Family Applications (1)

Application Number Title Priority Date Filing Date
SU131852A SU37861A1 (en) 1933-07-13 1933-07-13 Conveyor

Country Status (1)

Country Link
SU (1) SU37861A1 (en)

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