Answer:
A standard dimension for sandwiches and rulers
Other terms for this handy device include doohicky, doo-dad, and whatchyamacallit.
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair
What can be measured but has no length, width or height?
Where is the ocean deepest?
People take me on walks and I run and have fun. What am I?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?