Introduction; Technical Description - Perkins Mk2 Manuel D'instructions

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Introduction

We would like to thank you for your decision to purchase this CLEMENT CLARKE product.
If the instructions in this manual are carefully followed, we are confident that this product will
give you reliable and trouble-free usage.
We will be forced to disclaim any warranty and liability if the instrument is altered in any way
or if routine maintenance is neglected or not carried out according to factory specifications.
Only original CLEMENT CLARKE accessories are to be used to ensure continued reliability of
the instrument.
Because the Perkins tonometer is capable of being used in all positions, the mass of the
Goldmann doubling prism must be controlled accurately. Only HAAG-STREIT prisms
should be used or the disposable Tonosafe prism can be used to prevent cross-infection.
Any other prisms may give a false reading if used in the Perkins tonometer.
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Technical Description

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A pair of spiral wound flat springs connected in series are progressively tensioned by rotation
of the operator's calibrated thumb-wheel. The resulting force stored in the spring is
transmitted through a balanced arm to the applanation doubling prism or the Tonosafe prism
mounted at its end.
The battery charger conforms to Class II insulation and has also been tested to EN60601.
This equipment is designed and manufactured to be as safe as is reasonably practicable
when installed and used correctly by persons qualified to do so in accordance with the
manufacturer's instructions. Any misuse, incorrect assembly or installation could result in
the equipment becoming unsafe. It must not be repaired except by competent
persons under the manufacturer's instructions.
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