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Developer's Description

PositionalT is a fully validated Geometric Dimension and Tolerance calculator used to calculate the available Positional Tolerance between mating Holes and Pins or Fasteners, the default setting will divide the available tolerance between the Holes and Fasteners, leaving .001" clearance as the default distribution; the user can override this distribution to meet specific design needs. The application calculates the diameters and tolerances available at MMC, LMC and Nominal. One of the key features of PositionalT is the calculated Virtual Conditions, a RED color indicates a potential interference fit at the tolerance extreme condition. (Total Tolerance and/or Virtual Condition will turn RED if interference is calculated. When you are deep into a mating fit study and need to know standard drill sizes, select the Drill Index menu to browse the full spectrum of drill sizes from 1/64 up to 1 inch. (includes metric and letter drills)Feature list:- 19 calculations with a single click- MMC, LMC and Nominal tolerances- Resultant and Virtual Conditions- Over-ride distribution of tolerance- Floating and Fixed Fastener analysis- Inch or Metric units- Drill Index- Screen capture for collaborative work- Positional analysis in the field The key number related to True Position is the Virtual Condition; the clearance between the virtual hole and pin is vital. Plastics can be pushed to a line to line fit, but metal parts may not assemble as easy in this condition. Additionally, components that are assembled using automated methods may not assemble with a line to line fit.

Full Specifications

What's new in version 1.30

The Icon changed, a switch was added to go from a floating fastener to a fixed fastener analysis, the drill index has larger text and two drawings showing a floating and fixed fastener sample are included in the information page. The robustness of the RED text alert has been improved. Also .001" is subtracted from the Hole Positional Tolerance, this default distribution will always have a small amount of clearance even with 5 decimal place dimensions and tolerance values. Over ride is easy, just turn on the over ride option and manually enter your preferred distribution in the GD&T tolerance block.


Release June 10, 2016
Date Added June 10, 2016
Version 1.30

Operating Systems

Operating Systems iOS
Additional Requirements Compatible with: iphone4, iphone4, ipad2wifi, ipad2wifi, ipad23g, ipad23g, iphone4s, iphone4s, ipadthirdgen, ipadthirdgen, ipadthirdgen4g, ipadthirdgen4g, iphone5, iphone5, ipodtouchfifthgen, ipodtouchfifthgen, ipadfourthgen, ipadfourthgen, ipadfourthgen4g, ipadfourthgen4g, ipadmini, ipadmini, ipadmini4g, ipadmini4g


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