protractor
A protractor
That tool is called a protractor.
An angle ruler is a tool used to measuring angles like a protractor. An angle ruler is more accurate than a protractor.
Scoliometer-- A tool for measuring trunk asymmetry; it includes a bubble level and angle measure.
The sextant.
By measuring it using a suitable tool such as a ruler or caliper
A protractor.
Protractor
To create a 90-degree angle using wood, you can use a carpenter's square or a right-angle tool to ensure that two pieces of wood meet at a perfect right angle. This tool helps in accurately measuring and marking the angle before cutting or joining the wood pieces together.
A compass. This is not the same as a compass used to determine the direction of North.
The value of the relief (and rake) angle effects how the tool cuts into a particular material and the type or size of chip produced. For short: relief angle determines how deep and how rough the tool bites.
This depends on what you are measuring. A tool that can be used is a tape measure.