Hole Callout Magnet
One-glance help for diameter symbols, quantity, THRU callouts and practical examples.
Magnets, quick-reference cards, books and starter kits. Everything we make has one job: make manufacturing easier to understand—without putting you to sleep.
The answers you need, without a 400-page detour.
One-glance help for diameter symbols, quantity, THRU callouts and practical examples.
An approachable guide to plus/minus limits and why a part can look fine but still be wrong.
Common symbols introduced in plain English, with simple examples and room for more detailed lessons.
Our proposed complete set of five beginner reference magnets, including two additional concepts still in development.
Flip-through reminders for blueprint reading, hole callouts, datums and inspection vocabulary.
Printable beginner cheat sheets you can keep at your bench or review at home.
A beginner-friendly book that starts from zero and builds real understanding, one print at a time.
Practice drawings, questions and worked explanations for new machinists and inspectors.
A proposed training bundle combining printed learning materials and quick references. Final contents TBD.
We can explore custom reference materials using company-approved example drawings for aerospace, machining, fabrication and quality departments.
Want to learn while we build? Our free beginner lessons are already available.