put it on a dam scale
The density of a metal is a measure of how tightly packed its atoms are. Mass is a measure of the amount of matter in an object. Together, density and mass determine the physical properties and behavior of a metal, such as its weight, strength, and conductivity.
A bi metal strip
Mercury
metres
Density is the mass of the object divided by its volume. By this principle, to determine the density of a metal, place the metal onto a scale to measure its mass. After this, place the metal into a beaker of water and measure the volume change in the beaker. Divide the mass by the volume and you get the density.
It can be but not always. A steel ruler as opposed to a wooden one for instance.
You could use a pair of calipers. Alternatively, measure its circumference using a piece of string and divide the measure by pi.
metre cubed cm cubed
These are often measured in troy ounces, which is not exactly the same as the regular ounces.
To obtain the density you need to know the mass, and the volume of the object.So you'd have to weigh it using a balance to obtain the mass.The easiest way to measure the volume (particularly if it's an irregular shape) would be via the displacement of water.density = mass / volume
To measure penetration of a weld, one must cut and etch the weld, preferably on a test coupon. Etching is just using an acid that will discolor the weld metal so that there is a visible difference between the weld metal and the base metal. Once the acid has taken affect, one can measure the weld using calipers or a similar measuring device.
Measure the length around the roll.