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Over the Stone Biter Measurer; for use with the four rock rule.
Features non-freezing glide materal on end support
Main frame clears interfering rock to read outer rock when biting the 12'
Features End Support to go between two rocks approximately 12mm (1/2") apart
Each unit individually checked for 12'
accuracy
Standard Biters
Features a high loop for easy setting in place and removing...
...helps save the back! 
Features non-freezing glide material on end support
Round ball nose contact point for accuracy and easy reading of the stone
Each unit individually checked for 12' accuracy |