Any instruments that can measure mass and length. (not at the same time, doesnt have to be the same instrument).
By measuring the length, height and width of an object you can determine it's volume and by weighing it you can determine it's mass.
From these results it's possible to calculate the objects density.
Hydrometer is used in batteries to measure density. A float tells you the density using displacement.
A Triple Beam Balance is used to find the mass of an object.
A very common instrument for the direct measurement of the density of a liquid is the hydrometer, which measures the volume displaced by an object of known mass. A common laboratory device for measuring fluid density is apycnometer; a related device for measuring the absolute density of a solid is a gas pycnometer. Another instrument used to determine the density of a liquidor a gas is the digital density meter - based on the oscillating U-tube principle.
To find the density of a rectangular solid with just a ruler, you would need to measure the length, width, and height with the ruler. Then, calculate the volume by multiplying the three measurements together. Finally, divide the mass of the rectangular solid by the volume to find the density.
A pycnometer is a laboratory device used to measure the density of a substance by determining its mass and volume. It is commonly used in chemistry and materials science to accurately determine the density of liquids and powders.
An aerometer is an instrument used to measure the mass and density of gases.
a viscometer is used to determine viscosity(density) of a liquid.
It is not used for this.A hydrometer is an instrument used to measure the specific gravity (or relative density) of liquids, NOT rock.To measure the density of a rock you weigh a piece of it in air, then measure the volume of water it displaces in a measuring jug.Density = mass/volume.
An instrument for measuring the Density of a liquid. The density of the Acid in a car Battery, changes as the stored electrici charge in the battery, is used to power things. A Hydrometer is commonly used to measure the Acid Density in Lead/Acid car batteries. The result of the Hydrometer reading let's you know how much electric charge is left in the battery. It is most commonly used to find out whether or not, the battery is old and depleted, or still in good condition. Go to Wikipedia to find out what a Hydrometer looks like.
you can measure the density of plastic using an instrument called electronic densimeter. this densimeter give you the density measurements very easily and fast. below is few models of this instrument.http://www.worldtesters.com/Tester_Meters/Densimeters.htm
Hydrometer is used in batteries to measure density. A float tells you the density using displacement.
This is an instrument used to determine the richness of milk. due to the specific gravity
A pyranometer is the instrument used for measuring the intensity of sunlight. It measures the total solar radiation flux density in watts per square meter.
A compass is used to find your location in a forest
A graduated cylinder is typically used to measure the mass of a liquid. One could also multiply the density and volume of liquid in order to find the mass.
A Triple Beam Balance is used to find the mass of an object.
A violin can be used, but its effectiveness is limited.