NSPE vs GD&T Check

The NSPE mobile application allows you to view the schedule, presentations, exhibitors and speaker details from the conference. Users can take notes adjacent available presentation slides and draw directly on slides inside the app. Note-taking is also available in the posters and exhibitors modules. Additionally, users can share information with attendees and colleagues with in app messaging, tweeting and emailing.

GD&T Check helps mechanical engineering students validate their Geometric Dimensioning and Tolerancing callouts before submitting CAD drawings. Select a feature type, pick a GD&T symbol, enter your tolerance and datum references, and the app instantly tells you if your callout is valid or invalid — with a specific explanation of what it means and what to fix. CALLOUT CHECKER Build a feature control frame step by step. The app validates your combination against ASME Y14.5-2018 rules and flags errors like missing datum references, incompatible feature types, or incorrect material condition modifiers. PLAIN-ENGLISH EXPLANATIONS Every callout gets translated into a clear sentence explaining what it physically means — no more guessing what a tolerance zone actually controls. SYMBOL REFERENCE LIBRARY Browse all 14 GD&T symbols with definitions, when to use each one, common mistakes, and datum rules. Organized by category: Form, Orientation, Location, Profile, and Runout. SAVED HISTORY Keep a log of every callout you check. Useful as a running reference while working through drawings or homework. Built for students learning GD&T in college-level CAD, manufacturing, and metrology courses. Works fully offline — no account required, no internet needed.