Measurement of squareness of panel

Procedure

Zero the dial gauge C.3 to the reference line passing through B2 and B3.

The panel is placed upside down into contact with the transverse stops B1, B2 and B3.

The deviations on the four sides of the panel are successively measured.

 

Expression of results including methods of calculation and precision of test methods

Readings are to be taken to two decimal places and shall be rounded and recorded to the nearest

first decimal place. All measured deviations shall be within the values given in Table 

Key

1 Panel

2 Front edge ø 5 mm

3 Dial gauge C3

4 Panel bottom side

5 Measurement table

A1…A3 Support stops

B1…B3 Traverse stops