A square ruler is a measuring instrument whose measurement surface and base surface are perpendicular to each other and used to check the error of right angle, perpendicularity and parallelism. It is also called 90 ° square ruler. It is used in home improvement or in the inspection of verticality of some industrial machinery, in the process of positioning or marking during installation. The characteristic of the square ruler is that the accuracy of this ruler is very high, so it is often used in work that pays attention to higher accuracy. Next, let's take a closer look at the square ruler through some pictures of the square ruler!
Â
Square picture
Â
The use of square
Â
1. The square ruler is generally used to inspect precision measuring tools; the first level is used to inspect precision workpieces; the second level is used to inspect general workpieces.
2. Before use, check all working surfaces and edges for bruising. The left and right sides of the long side of the square and the upper and lower sides of the short side are the workpiece surfaces (that is, right and left inside and outside). Wipe the ruler face and the tested face clean.
3. When using, put the square ruler on the working surface of the measured workpiece, and use the optical gap method to identify whether the angle of the workpiece is correct. Pay attention to handling, leaning, and putting gently to prevent deformation.
4. In order to obtain accurate measurement results, the square can be turned over 180 degrees and measured again, and the arithmetic mean value of the second reading can be taken as its measurement result, which can eliminate the deviation of the square itself.
A square ruler for carpentry, a drawing instrument that can be placed with a ruler at any desired angle to one side of the board. It consists of a square base and a ruler. The ruler base is made of aluminum alloy or iron, which is mainly used for positioning; the high-end one is also equipped with blisters; the ruler rod is made of steel tape and has a scale engraved on it. High-end ones are also made of stainless steel.
Â
The purchase of square feet
Â
Everyone buys a square ruler, especially if it is completely unprepared in advance; that is to say, when there is only a square ruler in hand, how to choose an accurate square ruler? I tell you the easiest, most convenient and most accurate method. Take two right-angle rulers in hand and measure the outer angle of B ruler with the inner angle of A ruler first; then measure the outer angle of A ruler with the inner angle of B ruler. If there is no gap between the two measurements, it means that both rulers are accurate. As soon as one item sees a gap, it means that at least one of the rulers is inaccurate; then take two square rulers and then measure; until two accurate rulers are found.
The above is an introduction to the pictures of the right angle ruler and the use and purchase of the right angle ruler. In fact, in our lives, the place where the right angle ruler is usually used is when the carpenter will use it during decoration. Of course, some families will also prepare a square ruler, so we still need to understand the content of the square ruler.
A walking support and a horizontally moving oil cylinder are arranged under the main body of the gantry. Inverted arch side templates are arranged on both sides of the main body of the gantry, so that the gantry can move back and forth, left and right. The tunnel inverted arch self-propelled frame has a simple structure, low cost, and low failure rate. While ensuring vehicle traffic, inverted arch construction can be carried out, which can effectively ensure the construction speed of the tunnel and effectively reduce construction accidents.
Inverted Arch Trestle Trolley,Electric Trestle Trolley,Arch Trestle Trolley,Hydraulic Inverted Arch Trolley
Anshan Lijian Engineering Group Co. LTD , https://www.lijianformwork.com