Doing simple DIY home improvement projects would be impossible without some essential tools. To put up, say, a bookshelf, you're definitely going to at least need a pencil, a leveler, and a tape measure. If you're alone, getting those measurements can be a little tricky...that is, if you don't know how to really maximize your tape measure's potential. Those bits and bobs you thought were purely superficial are actually very intentional utilitarian elements.
Here's how to get full use out of this seemingly simple tool: