You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure

You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus

Rulers

Owned by Brian Carter (Unlicensed)
Last updated: Jan 16, 2013

You can work with rulers to have a visual representation of the current dimensions.

 Rulers are only displayed for orthographic views (top, left, right, etc.) and display the current Model Space or Paper Space units (see Space Units).

Tip: Another handy visual aid, which can be used in tandem with rulers, is the grid. See Grid.