graduated cylinder
measure objects, masses. and liquids.
Objects such as liquids, gases, and irregularly shaped solids are typically measured in volume. Volume is the amount of space occupied by an object and is commonly measured in units like liters or cubic centimeters.
Measuring irregularly shaped objects by water displacement is a common technique because it provides an accurate volume measurement regardless of the object's shape. By comparing the volume of water displaced before and after placing the object in the water, you can determine the volume of the object without needing to calculate complex mathematical formulas.
There is no instrument in world which measure how small an object is but instruments measure how large an object is .
It is a mediaeval instrument for measuring the altitude of the sun and other sky objects, now replaced by the sextant.
water
A caliper is typically used to measure the gaps between two objects. It can provide precise measurements in millimeters or inches depending on the type of caliper being used.
RadarRadar
The instrument used to measure the diameter of spherical objects is called calipers.
Measuring irregularly shaped objects by water displacement helps to determine their volume accurately, as irregular shapes make it difficult to measure using traditional methods such as rulers or calipers. By immersing the object in water and calculating the volume of water displaced, we can determine the volume of the object regardless of its shape.
A ruler is an example of an instrument that can be used to measure relatively small linear distances, though it could not measure all three at once.
One could use a caliper to measure relatively small objects. Also, a scale would measure its weight. If it is regularly shaped with some straight edges, use a ruler.. You can drop it in a measuring cup half full of water and measure how much water it displaces.