Do you mean VERNIER tool, as used by Engineers and metal machinists? If yes; then it is far too difficult to explain on this website. Wikipedia may have an explanation for you if you Google the words:- Vernier Caliper how to use. It will be a full page explanation I expect.
You use a tool
tool that you use to dissect something with
You can use the pen tool, quick selection tool and lasso.
tool
tool use for smoothing curve surfaces
There is no specific tool but You can use Dreamweaver
For selections you can your the Marquee Tool, Lasso Tool, or Magic Wand Tool. To cut that selection you can use the Move Tool, or the Ctr-X keyboard shortcut.
You can use a scan tool, or unhook the battery.You can use a scan tool, or unhook the battery.
You can use a scan tool or unhook the battery.You can use a scan tool or unhook the battery.
The hammer is the best tool for the job.
The best tool to use to measure distance underwater is
You would use the marker/pen/brush tool, or the paint bucket tool.