You need an electronic component tester, which is an electronic component solder joint tester! Indus

First of all, it should be roughly divided into three types of projects: housing construction, roads and bridges, and tunnels.

This part of the housing construction needs to be tested mainly by the foundation pile, and the foundation pile detection instruments include high strain foundation pile detector, low strain foundation pile detector, strength detector, rebound tester, etc.

There are more parts of roads and bridges that need to be tested, such as thickness gauge, rebound meter, impact echometer, level, steel corrosion meter, bellows grouting quality detector, bolt tester, ultrasonic detector, scanning impact echometer, ground penetrating radar, infrared imager.

One part of the tunnel is mainly for lining quality inspection, and the main ones used are shock echo meters, ultrasonic meters, etc.

Hello, the sales of testing instruments are not suitable for you, as a teacher, the prospects should be better. Choose an industry you like, which is conducive to your own development.

Of course, it depends on your life goals.

Yes, sales may be a little bitter, but it is very promising.

It can be, it should be done first technology and then sales, so that you can know more about the product to sell.

What university? Girls do sales. Beware of unspoken rules.

Detection or something? Measure distance, rebound concrete strength, measure yin and yang angle, measure verticality, flatness; Be specific.

How to use:

Perpendicularity detection: The detection ruler is an extensible structure, 1 meter long when folded and 2 meters long. For 1 meter detection, push down the meter cover.

Push the movable pin push button up, and put the left side of the test ruler close to the measured surface, (Note: the ruler should be held vertically, observe the red movable pin exposed 3-5 mm, and swing flexibly.) When the pointer swings and stops by itself, directly read the downward scale value of the scale pointed by the pointer, which is the verticality deviation of 1 meter of the measured surface, and each grid is 1 mm.

When 2 meters of detection, the detection ruler is locked and fastened, the detection method is the same as above, and the upward scale value pointed by the pointer is directly read, and this value is the 2-meter verticality deviation of the measured surface, and each grid is 1 mm. If the measured surface is uneven, you can use the right side of the upper and lower feet (do not unscrew out the middle foot) to detect.

Flatness detection: The side of the detection ruler is close to the surface to be measured, and the size of the gap is detected with a fit-shaped feeler gauge (refer to the fit-shaped feeler gauge), and its value is the flatness deviation.

Levelness detection: The side of the detection ruler is equipped with a leveling tube, which can detect the levelness, and the usage is the same as that of an ordinary level.

Calibration method: vertical detection, if found that the instrument pointer value deviation, the detection ruler should be placed on the standard for calibration, the standard can be self-made, a horizontal rectangular wood or aluminum profile about a meter long, the tree is directly installed on the wall, adjusted vertically by the line pendant, the detection ruler is placed on the standard horizontal object, and the level tube "S" screw is adjusted with a Phillips screwdriver to center the bubble.

Of course, it is reliable, my friend works here, it is a national high-tech enterprise, and the treatment is more than 4 jobs.

Theodolite, level, rebound meter, feeler gauge, level, steel ruler, ruler, infrared detector, etc., which are generally used in the engineering site; There are many equipment in the laboratory, most of which are for mechanical testing.