Ruler
It depends. The weight or the length. With the weight you can use a regular scale. With the length you can use a regular ruler.
A meter rule.
A tape measure.
One could use a ruler.
There are many. Though the ones most commonly used are the ruler and the measuring stick.
A measuring tape should work well in most cases.
You can measure the length of a curved line by using a flexible measuring tape following the curve or by breaking it down into smaller straight segments and adding them up. Another option is to use a formula that calculates the arc length of a curve based on its equation and limits.
Meter stickI'm thinking you would use a tape measure
You should use a tape measure, ruler, or meter stick. The measurements should be in inches, feet, or centimeters.
Use a ruler
Use some of the properties of parallelograms. Any of the following properties are sufficient to ensure that a quadrilateral is a parallelogram:Both pairs of opposite segments are parallel.Both pairs of opposite segments have the same length (i.e., if you name the sides a, b, c, and d, sides a and c - which are opposite - have the same length; sides b and d - which are opposite - also have the same length between themselves).Both pairs of opposite angles have the same measure.There are probably other possibilities, too.