The steps are as follows.

Press “Shift”+”6″combination key to measure the length of tool
Every time we measure the length of disparate tool,we need execute disparate file.
For example,we measure the length of tool 2 and tool 3
Press menu button,choose “1.Local Files”.We start from tool 2.
Then choose a file support tool 2.
The tool will change from T1 to T2.
Press “Shift”+”6″combination key to measure the length of tool NO.2
The steps of measuring tool NO.3 is as same as tool NO.2
The video is as follow.