Purpose:

• To measure blood pressure manually.

• To help doctors, nurses, or trained users check if a person has normal, high, or low blood pressure.

• Often used in clinics, hospitals, and homes for accurate blood pressure readings.

Functions:

1. Measures Systolic and Diastolic Pressure:

   • Systolic pressure is the pressure when the heart beats.

   • Diastolic pressure is the pressure when the heart rests between beats.

2. Uses a Mercury Column:

   • Mercury rises or falls in the tube to show the pressure level.

   • It gives accurate and reliable readings.

3. Includes an Inflatable Cuff:

   • The cuff is wrapped around the upper arm and inflated to stop blood flow.

   • As air is slowly released, the pressure is measured.

4. Operated Manually:

   • Requires a person to pump the bulb and read the mercury scale.

   • Usually used with a stethoscope to listen to heartbeats and know when to read the numbers.

5. Durable and Long-Lasting:

   • Made from materials that last a long time if used and stored properly.

6. No Batteries or Electricity Needed:

   • Works without power, so it's useful in places where electricity isn't available