Add up total length of selected dimensions.
Simply select dimensions and it will add up all dimension figures for you.
Select dimensions you want to add up.
Use text overrides? [Yes/No] <Yes>:
Press Enter to use override dimension texts as the figures, type "No" to use default dimension figures.
For instance, the actural length of an object is 1000, but you override the default length with 1200 in the dimension text. Select "Yes" will force it use figure 1200 instead of 1000.
Total sum of selected dimension is: 406.8698
The format of the result is based on your current units settings, including units type and units precision. You can change it with command UNITS.