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				Rugged roller wheel for accurate measurements 
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				Clear audible tone indicates wheel movement 
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				Easy-to-read displays shows length, count and scale factor simultaneously 
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				Count and ADD button 
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				Simple controls 
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				19 built-in user scale factors including all common map scales 
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				Measures in miles, kilometers and nautical miles 
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				Counter and adder buttons on probe tip let you count stops made or add fixed destination lengths as you measure 
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				Calculate auto-scale factor from reduced, enlarged or odd-scale maps 
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				Create, store and retrieve user scale factors 
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				Automatic shut-off assures long battery life 
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				Low battery indicator