Which action ensures the scale is ready to weigh?

Which action ensures the scale is ready to weigh?

• A. Adjusts weights until scale is in balance
• B. Turn on the scale
• C. Calibrate with a standard weight
• D. Empty the scale

Answer: (A)

The essential step is establishing a true zero so the scale has a neutral baseline before weighing anything. On a balance scale, you adjust the sliding weights until the beam is level and the pointer rests at zero with nothing on the scale. This zeroing removes any offset from previous use or minor drift, so when you add the patient’s weight, the measurement is accurate. Turning on the scale might power it up, but it doesn’t guarantee that the reading starts at zero. Calibrating with a standard weight is a verification or adjustment of accuracy using a known mass, which you’d do if you suspect the scale is off or after maintenance. Emptying the scale removes items, but if the scale isn’t zeroed, the reading could still be biased by residual offset. Balancing to zero first makes the scale ready to weigh correctly.

The essential step is establishing a true zero so the scale has a neutral baseline before weighing anything. On a balance scale, you adjust the sliding weights until the beam is level and the pointer rests at zero with nothing on the scale. This zeroing removes any offset from previous use or minor drift, so when you add the patient’s weight, the measurement is accurate.

Turning on the scale might power it up, but it doesn’t guarantee that the reading starts at zero. Calibrating with a standard weight is a verification or adjustment of accuracy using a known mass, which you’d do if you suspect the scale is off or after maintenance. Emptying the scale removes items, but if the scale isn’t zeroed, the reading could still be biased by residual offset. Balancing to zero first makes the scale ready to weigh correctly.