Shanghai brick caliper selection thunder rhyme test instrument

The use of brick calipers to measure the dimensional deviation of wall materials is an important indicator that directly affects masonry construction and the quality of masonry wall materials.

If the specifications and dimensions do not meet the standard requirements, such as the wall material specifications being too large or too small, or the size of the same batch of wall material products being different, the following problems may occur when laying wall materials: there may be significant differences between the actual masonry amount of the products and the design calculation amount; The width of the mortar joint between the wall material products during masonry cannot be kept consistent, and the width varies; One layer of wall material products with uneven surface and uneven height after laying; If the deviation is too large when masonry is used as wall material, it can increase uncertainty in building design calculations and budgets, and cause a large amount of uneven masonry in the structure, affecting the structural load-bearing capacity and significantly reducing the seismic performance of the building. The national standard provides detailed regulations on the length, width, height (layer thickness) involved in the dimensional deviation of products.

Shanghai brick caliper selection thunder rhyme test instrument

Parameters of brick caliper:

Bending measurement: measurement range (mm) -15~+30, accuracy (mm) 0.1

Measurement of external dimensions: measurement range (mm) 45~247 accuracy (mm) 0.5

The reading of the brick caliper

1. When reading, first read the integer in millimeters on the ruler based on the zero mark of the cursor, that is, the integer part in millimeters

2. Then check which scale line on the cursor is aligned with the scale line on the ruler body. If the 6th scale line is aligned with the scale line on the ruler body, then the decimal part is 0.6 millimeters (if there is no perfectly aligned line, take a line close to it)Read the aligned lines.

3. If there is *, subtract * from the above result uniformly (* is negative, equivalent to adding the same size of *), and the reading result is:

L=integer part+decimal part - *.

Shanghai brick caliper selection thunder rhyme test instrument