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State similarities and differences between the laboratory thermometer and the clinical thermometer.

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State similarities and differences between the laboratory thermometer and the clinical thermometer.

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Similarities:

(i) Both thermometers consist of long narrow uniform glass tubes.

(ii) Both have a bulb at one end.

(iii) Both contain mercury in bulb.

(iv) Both use Celsius scale on the glass tube.

Differences:

(i) A clinical thermometer reads temperature 35°C to 45°C while the range of laboratory thermometer is -10°C to 110°C.

(ii) Clinical thermometer has a kink near the bulb while there is no kink in the laboratory thermometer.

Due to kink mercury does not fall down on its own in clinical thermometer.

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