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iTolerance – an ISO Hole Basis Tolerance Chart for your iPhone.

This application enables the user to quickly locate a selection of Fits for Shafts and Holes that meet the requirements for normal engineering work. It also includes a visual comparison of the hole and shaft tolerances for the various types and classes of fits.
It includes tolerances for a number of clearance fits, transition fits and interference fits.
• Select a Diameter Range and a standard Tolerance to quickly view the associated hole or shaft tolerances.
• Graphical representation of the standard selection of fits.