Land area measuring device

Abstract

The invention discloses a land area measuring device which comprises a measuring box, a tape measure is arranged at the bottom of an inner cavity of the measuring box, the upper part of the measuring box is slidably connected with a rotating shaft in a penetrating manner, the lower end of the rotating shaft is rotatably connected with a mounting block, and the lower part of the mounting block is fixedly connected with a first clamping plate. The side, close to the measuring tape, of the first clamping plate is fixedly connected with a second clamping plate through a clamping spring, the left side wall and the right side wall of the movable plate are rotationally connected with connecting rods through pin shafts, the plug pin is slidably connected with the outer wall of the fixing nail, and the outer portion of the end, penetrating through the measuring box, of the measuring tape is slidably connected with a sliding sleeve plate. The lower part of the sliding sleeve plate is fixedly connected with a threaded nail. The invention relates to the technical field of measuring equipment. The land area measuring device solves the problems that when an existing land area measuring device uses a tape measure for measurement, the tape measure is inconvenient to fix well, and the tape measure needs to be held by hands all the time for collision and springback in the traditional method for preventing springback of the measuring tape.

Description

technical field [0001] The invention relates to the technical field of measuring equipment, in particular to a land area measuring device. Background technique [0002] Land area, also known as parcel area, refers to the land area within the boundary line of a parcel of land ownership. The principle of area measurement is that the map is the basic control, and the measurement is carried out in sections, and the adjustment is made according to the area ratio. As for the summary level by level, with the development of science, economy and technology, the measurement of land area is a very common and necessary work. [0003] Existing land area measuring devices often cannot measure large-area land by one person when using a tape measure. The tape measure is inconvenient to fix well when measuring, and the traditional method of preventing the tape measure from rebounding requires holding the tape measure all the time to resist rebound. , but due to the large land area measureme...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a land area measuring device, which solves the inconvenience of using a tape measure in the existing land area measuring device. The fixed tape measure is very good, and the traditional method of preventing the tape measure from rebounding needs to hold the tape measure all the time. Problems with rebounding

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