The use of premium-grade stainless steel, zinc alloy, brass and aluminum endow strength and attributes to the lightweight property of these instruments. As a result, these Stethoscopes withstand exposure to water, heat or physical impact.
There are two numbers in a blood pressure reading: systolic and diastolic. A typical reading might be 120/80. When the doctor puts the cuff around your arm and pumps it up, what he/she is doing is cutting off the blood flow with the pressure exerted by the cuff. As the pressure in the cuff is released, blood starts flowing again and the doctor can hear the flow in the stethoscope. The number at which blood starts flowing (120) is the measure of the maximum output pressure of the heart (systolic reading). The doctor continues releasing the pressure on the cuff and listens until there is no sound. That number (80) indicates the pressure in the system when the heart is relaxed (diastolic reading).
An Otoscope is a medical device used to look into the ears. Health care providers use otoscopes to screen for illness during regular check-ups and also to investigate when a symptom involves the ears. With an otoscope, it is possible to see the outer ear and middle ear.