Learn to read technical drawings by doing.
Short, hands-on exercises on real drawing details: welding symbols, views, tolerances, threads, floor plans and GD&T. Every answer is checked on the spot, with a clear explanation.
- No account needed
- US and European standards
- Certificates
What weld does this symbol call for?
Everything you need to read a drawing
Start with the basics, then go as deep as your work needs. Each course ends with a practice test.
Drawing basics
Line types, first and third angle projection, orthographic views and title blocks.
Scale reading
Read real lengths off a drawing with an architect's scale or a metric scale rule.
Welding symbols
Reference line, arrow side, weld types, sizes, length and pitch, field welds.
Mechanical prints
Dimension symbols, tolerances, limits and fits, thread callouts and surface finish.
Construction plans
Floor plan symbols, dimension strings, elevations, sections and levels.
Electrical drawings
Symbols, contacts and control logic, device tags, wire colours and wire sizes.
GD&T
Feature control frames, datums, tolerance zones and bonus tolerance.
Read, answer, get it right
No videos to sit through. You learn by reading drawings, the same way you will use them at work.
Read the short lesson
Each lesson explains one thing in plain words, with drawn examples in both standards.
Answer real drawing questions
Every question is drawn fresh. Get it wrong and you see why, then try again.
Pass the test, get a certificate
Finish a course's practice test and get a certificate with a public check link.
Same weld. Two ways to draw it.
A drawing from a US shop and one from a European shop can ask for the same weld and still look different. Misread it and the weld ends up on the wrong side.
- Pick AWS, ASME or ISO once. Every exercise follows it.
- Switch any time to see how the other system draws it.
- Metric or feet and inches for scales and plans.
Built for people who work from drawings
- Students and apprenticesWelding, machining and construction courses. Practice until the symbols read themselves.
- CWI exam prepDrill welding symbols in AWS A2.4 until you stop second-guessing the arrow side.
- Job print testsMany shops test print reading before they hire. Walk in having read hundreds of drawings.
- TeachersPractice that grades itself, in US or European standards. Class plans are coming.
Try it free. Go Pro when it clicks.
Good to know
Do I need an account to start?
No. Open any course and answer questions right away. You get 5 free questions in every course. An account keeps your progress on every device.
US or European standards?
Both. Every exercise works in the US standards (AWS A2.4, ASME Y14) and the European ones (ISO 2553, ISO 128, ISO GPS). Pick one, or switch any time to compare.
Does it help with the CWI exam or a print reading test for a job?
It trains the reading part: symbols, views, dimensions and tolerances, with instant feedback. It is not an official exam and does not replace the standards themselves.
What does the certificate show?
That you finished the practice test of a course. Each certificate has a public link that an employer or teacher can check. It is not a qualification from AWS, ASME, ISO or any certification body.
Can I cancel Pro?
Yes, any time, from your account page. You keep Pro until the end of the period you paid for.
Your first drawing is waiting
Start with drawing basics. It takes a minute and needs no account.