Related reading: Precautions for Housing Inspection (A Complete Collection of Housing Inspection for Rough Houses, New Houses, Hardcover Houses and Second-hand Houses)
1. Vertical measuring ruler
The function of straightedge is mainly to detect verticality, levelness and flatness, and it is the most frequently used detection tool in home improvement supervision. Check whether the walls and tiles are flat and vertical. Check whether the floor keel is flat.
How to use the vertical measuring ruler: When measuring verticality, the movable pin pushes the key upward, and the left side of the measuring ruler is close to the measured surface. When the pointer stops swinging by itself, directly read the downward scale value of the scale pointed by the pointer, that is, the verticality deviation of the measured surface 1 m, each grid1mm. When detecting levelness, install a leveling tube on the side of the measuring scale to detect levelness. Pay attention to correction when using.
Vertical measuring ruler
2. Multifunctional internal and external right-angle measuring ruler
The function of multifunctional inner and outer right-angle measuring ruler is mainly to detect the inner and outer (yin and yang) right-angle deviation on the object, and the verticality and levelness of the general plane. When in use, press and open the angle pointer box. When the pointer is at the zero position, the right angle is 90 degrees, and the deviation value is directly read, and each grid is1mm.
3. Multifunctional vertical corrector
Multifunctional vertical corrector is a multifunctional lead straight line corrector suitable for measuring verticality. When in use, fix it and then put down the messenger wire. It can be used for the installation of large-scale ironwood frame and brick wall structure, and can automatically take up the wire, which is simple and convenient.
4. Vernier caliper
Vernier caliper is a measuring tool for measuring length, inside and outside diameter and depth.
Usage of vernier caliper: Before use, wipe the measuring claw to make it close together, and check whether the zero scale line between the vernier and the main ruler is aligned. If there is no alignment, record zero error. When measuring, hold the ruler with the right hand, move the cursor with the thumb, and hold the object with the outer diameter (or inner diameter) to be measured with the left hand, so that the object to be measured is located between the outer measuring claws, and when it is close to the measuring claws, it can be read. The reading result is: L= integer part+decimal part-zero error.
5. Gage gauge
The feeler gauge, also known as micrometer or thickness gauge, is one of the measuring instruments used to check the gap.
How to use the feeler gauge: When using, wipe the measuring surface of the feeler gauge clean, then insert the feeler gauge into the gap to be measured, pull the feeler gauge back and forth, and tighten the lock nut until a little resistance is felt. At this time, the value marked by the feeler gauge is the gap to be measured.
6. Diagonal measuring ruler
The diagonal measuring ruler is used to detect the contrast deviation of the two diagonal lengths of a square object, and the ruler is mainly placed on the diagonal of the square object for measurement.
How to use the diagonal measuring ruler: When in use, lock the button of the large section ruler at the "0" position of a scale line on the middle section ruler, hold the sharp corners at both ends of the measuring ruler against the vertex of the diagonal to be measured, and tighten the small section ruler. When testing another diagonal line 1, loosen the button of the large pitch ruler and tighten it after testing. Visually check the value indicated by the button on the scale line, which is the deviation value (unit: mm) of the comparison of the length of two diagonal lines on the object.
7. Check the power socket
The function of the test socket is to detect the circuit sequence. There are three indicator lights on the power check socket, which respectively indicate the zero line, the bottom line and the live line from left to right. The two indicator lights on the right are on at the same time, indicating that the circuit is normal and all three lights are off, indicating that the circuit has no phase line. Only the light in the middle is on, which means that the ground wire is gone; And only when the light on the right is on, the zero line is gone.
8. Multimeter
Multimeter is a multifunctional and multi-range measuring instrument. Generally, DC current, DC voltage, AC current, AC voltage, resistance and audio level can be measured, and some parameters of AC current, capacitance, inductance and semiconductor can also be measured.
How to use the multimeter: firstly, perform mechanical zero adjustment, then select the gear and range of the change-over switch according to the model and size to be measured, find out the corresponding scale line, and then select the measuring current, voltage or resistance as needed, and select the position of the contact pin socket.
9. Water pressure gauge
As the name implies, a water pressure gauge is an instrument used to measure water pressure. Now the water pressure gauge also has many uses, which can be used to measure the pressure of gas or liquid medium with no corrosive effect on copper alloy at -40 ~70 degrees.
How to use the water pressure gauge: First, check whether the water pump is working at full load at this time. If the pump is full, it means that the water supply capacity is insufficient or the pipeline is accidentally drained. There should be a regulator (unit) between the measuring instrument and the frequency converter. If the regulator is proportional integration, the integration time is lowered (if it is closed, it is opened). If this regulator is a pure proportional regulator, the given value can only be increased a little.
Related reading: House inspection taboo: Do not sign for acceptance before renovation, what preparations should be made before closing the house?
Here are the tools you need to check the house.
1 hammer
Its uses are as follows: in the acceptance of the main structure of a newly-built house, you can tap the preliminarily painted wall gently with a small hammer, and hear the sound of "empty drum", which means that the cement mortar is not evenly spread or used enough, and the plastering layer of the inner wall is partially cracked and sanded, which means that the quality of the house is unqualified. If you hear a dull thump, it means there is not much problem with the quality. Practicality: 5 stars
2 flashlight
The purpose is to survey the main structure of the house to see whether the walls are straight and whether there are convex or concave parts. Lean the flashlight against the bottom of the wall and shine upward. The shaded part is the problem. At the same time, you can also check whether there is construction waste with a flashlight in the flue and vent. Practicality: 3 stars
3 lighter
When inspecting the house, there are reserved holes in the exhaust passage of the kitchen and bathroom, and whether the exhaust passage is normal can be detected with a lighter.
Practicality: 3 stars
4 tape measure
It plays a great role in house inspection, and can be used to measure the height difference, floor height and house area of the top beam, window frame and bathroom. Practicality: 4 stars
5 electric pens
When looking at the house, you should bring an electric pen or three plugs, and the one with an indicator light is the best. It is mainly used to check the socket, and can be discharged to the reserved power socket with an electric pen or plug.
Practicality: 2 stars
6 broom
Unused paint brushes and brooms, what's the use of them? The main thing is to clean the building dust at the angle between the ground and the wall. Don't underestimate this layer of dust! Cracks and potholes may be seen after cleaning, and even steel bars may be exposed! Decorated house, after cleaning the dust on the ground, see if there are any problems such as floor damage and cracks. Property buyers should remember to record the problems found and take photos as evidence. Practicality: 4 stars
7 hose
Generally, when the house is inspected, the water and electricity have been connected. Owners can turn on each tap to see if there is any water flowing out, put some water in a container, pour it into each drain, and visually judge whether the drain pipe is unobstructed. Practicality: 4 stars.
8 table tennis
The main purpose of table tennis is to measure the inclination of the bathroom floor. Practicality: 3 stars
9 glasses
The glasses here are actually trying to find out what the problem is, and want the owner to observe everything on the ground and underground with his eyes.
Practicality: 5 stars
10 chalk
Never underestimate chalk, it is the most practical tool. After the above problems are found during the house inspection, the owner shall mark them in a prominent position with chalk in time to facilitate the construction party to carry out maintenance. Practicality: 5 stars
According to the increase of our renovation projects, there are still many house inspection tools on the list. If you learn how to use these house inspection tools, you can inspect your own house. The purpose of house inspection is to conduct a comprehensive inspection of the new house through a professional third-party organization, and submit the problems before delivery to the developer for rectification, so as to avoid the responsibility of the owner for the quality of the house after the house is closed in the later period and avoid unnecessary economic losses. It is recommended that you apply for the free house inspection service of Tuba rabbit, and the professional house inspection master will come to the house for free, which will lead to empty drum, peeling and water leakage.
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