Millimetres if you are making the picture frame; centimetres if you wish to buy a ready-made frame.
Miles
miles
inches
gallons
the unit used to measure angle is degree. It is also measured in radians.
Grams.
it is a frame of a picture of a man
A wireless picture frame allows the picture frame to constantly change pictures without it being hooked up to anything. It's kind of like a slideshow except in a picture frame.
The same unit as you use to measure any mass. The SI unit for mass is the kilogram.
it is use to measure output
The Unit Used To Measure A Train Can Be Kilometer.
what you are trying to measure
Miles
This depends on what unit you are using to measure in. However, area will always be measure in (unit)^2.
Which unit would you use to measure the water in a full tub?
Feet
to measure a small trashcan