Put the material in a known test hole on the aperture, and then through a small aperture will load imposed on the fabric, for reads deflection scale pointer value.

There is a factor which depends on the breaking scale in the formula of deflection Angle of timelike and spacelike test particles in the D-stars.

But in the raster graphic display system, scale lines and character will be distorted seriously owe to the limited screen resolution in the case of deflection, which affect the display quality.