It will thus be appreciated that the present invention provides an effective means of enhancing the accuracy of ultrasound level measuring apparatus and has the particular benefit that it may be applied without {HEAD ~ any change} to {TAIL ~ the electronic circuit design} 
to
It will thus be appreciated that the present invention provides an effective means of enhancing the accuracy of ultrasound level measuring apparatus and has the particular benefit that it may be applied without { HEAD ~ any change } to { TAIL ~ the electronic circuit design }
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