Similarities between laboratory and clinical thermometer are:

(i) The body of both of them is long and narrow.

(ii) A bulb containing mercury is attached at one end.

(iii) Mercury is used to measuring temperature on the Celsius scale.

Differences between laboratory and clinical thermometer:

(i) Laboratory thermometer is used to measure temperature change in the surrounding, while the clinical thermometer is used to measure body temperature.

(ii) The range of laboratory thermometer is from -10^°C to 110^°C, while for a clinical thermometer range is 35^°C to 45^°C.

(iii) The clinical thermometer has kink near bulb to prevent mercury from falling after rising which is missing in

laboratory thermometer.

The diagram is shown below: