Which device is used to measure mass?

• A. Triple Beam Balance
• B. Barometer
• C. Telescope
• D. Pictogram

Answer: (A)

Mass is measured by a device that compares an unknown mass to known reference masses on a balance. The triple beam balance does exactly this: you place the object on the pan and slide the riders along three beams until the balances are level. The scales on the beams provide a reading in grams (or kilograms) because you’re tallying how much matter is present by balancing against calibrated weights. This direct mass comparison is what makes it the appropriate instrument for measuring mass.

In contrast, a barometer measures atmospheric pressure, a telescope is used to observe distant objects, and a pictogram is a visual representation of data.