Dimension tool

`↑ Shift` + `T`

All hotkeys for SketchUp

Select tool Select tool	`Space`
Eraser tool Hide	`↑ Shift`
Select tool Subtract	`Ctrl` + `↑ Shift`
Paint bucket tool Paint bucket tool	`X`
Eraser tool Soften/Smooth	`Ctrl`
Eraser tool Unsoften/Unsmooth	`↑ Shift` + `Ctrl`
Paint bucket tool Sample paint	`Alt`
Eraser tool Eraser tool	`E`
Misc. Rectangle tool	`R`
Misc. Line tool	`L`
Misc. Circle tool	`C`
Misc. Arc tool	`A`
Misc. Make group	`G`
Misc. Tape measure tool	`Alt` + `M`
Misc. Freehand tool	`'`
Misc. Dimension tool	`↑ Shift` + `T`
Misc. Text tool	`↑ Shift` + `D`
Misc. Protractor tool	`Alt` + `P`
Misc. Section tool	`Ctrl` + `Alt` + `S`
Misc. Axes tool	`Y`
Misc. Move tool	`M`
Misc. Push/pull tool	`U`
Misc. Rotate tool	`Alt` + `R`
Misc. Polygon tool	`\`
Misc. Scale tool	`S`
Misc. Offset tool	`O`
Misc. Orbit tool	`Mouse middle click`
Misc. Make component	`B`
Misc. Zoom tool	`Alt` + `Z`
Misc. Zoom window tool	`Z`
Misc. Zoom extents tool	`↑ Shift` + `Z`
Misc. Previous view	`⭾ Tab`
Misc. Walk tool	`W`
Misc. Look around tool	`J`
Misc. Follow me tool	`Alt` + `F`
General Help	`F1`
General New	`Ctrl` + `N`
General Open	`Ctrl` + `O`
General Save	`Ctrl` + `S`
General Cut	`Ctrl` + `X`
General Copy	`Ctrl` + `C`
General Paste	`Ctrl` + `V`
General Erase	`Del`
General Erase	`D`
General Undo	`Ctrl` + `Z`
General Redo	`Ctrl` + `Y`
General Print	`Ctrl` + `P`
General Toggle shadows	`Alt` + `S`
General Layer window	`↑ Shift` + `E`
General Add page	`Alt` + `A`
Angle Iso	`F8`
Angle Top	`F2`
Angle Front	`F3`
Angle Right	`F4`
Angle Back	`F5`
Angle Left	`F6`
Surface Wireframe	`1`
Surface Hidden line	`2`
Surface Shaded	`3`
Surface Shaded with textures	`4`
Surface X-Ray	`T`
Surface Monochrome	`Alt` + `6`
Main window Toggle dialogs	`F`
Main window SketchUp preferences	`↑ Shift` + `P`
Main window Model info	`Ctrl` + `1`
Main window Outliner	`Ctrl` + `Q`
Main window Entity info	`I`
Main window Components	`↑ Shift` + `O`
Main window Pages	`Alt` + `L`
Main window Shadow settings	`↑ Shift` + `S`
Display Display settings	`Ctrl` + `2`
Display Toggle transperancy	`5`
Display Toggle edges	`N`
Display Toggle profile lines	`K`
Display Toggle sky	`Home`
Display Toggle ground	`End`
Display Toggle perspective / parallel	`V`
Display Section planes	`Ctrl` + `Alt` + `P`
Display Section cuts	`Ctrl` + `Alt` + `C`
Hide / select Close group / component	`↑ Shift` + `G`
Hide / select Hide	`H`
Hide / select Unhide last	`↑ Shift` + `L`
Hide / select Unhide all	`↑ Shift` + `A`
Hide / select Deselect all	`Ctrl` + `T`
Hide / select Hide construction geometry	`Q`
Hide / select Unhide construction geometry	`↑ Shift` + `Q`
Hide / select Erase all construction geometry	`Alt` + `E`