Wall Lengths Not Displayed

[Kbird]

there is a button on one of the toolbars that does the same thing , you might have clicked it by accident.....it toggles the temp. dims , on and off.

The button has the letter 'T' with a 45 deg. angled doubled end arrow on it , it "looks" a bit "grey" when its "on"... ( on same toolbar as angle and grid snaps)

Why a " T " ? for (T)emperory Dimensions I guess but not very intuitive....

M.