Engineering calculations, visual learning, GD&T support, Quality AI, CMM programming assistance, process capability and local inspection jobs — designed for phone use.
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Calculates diametrical position error from X/Y deviation. MMC mode adds bonus tolerance from feature-size departure.
Assumes a diametrical cylindrical positional tolerance zone. Verify the drawing's exact feature-control frame, datum scheme and applicable standard before acceptance.
iPhone: enter the number, then tap ± beside a signed field to make it negative.
Enter the deviations shown on the drawing. This build calculates the resulting worst-case clearance/interference rather than reproducing ISO 286 tables.
Quick theoretical basic-profile calculations for 60° metric threads. Use controlled thread specifications and calibrated gauges for product acceptance.
Paste measurement results separated by spaces, commas or new lines. This quick calculation uses the overall sample standard deviation.
Formal Cp/Cpk normally uses a within-process sigma estimate based on an appropriate subgrouping method. This build displays Pp/Ppk from overall sample s and a clearly labelled Cpk-style estimate using that same s for quick shop-floor screening only.
θ is measured between the adjacent side and hypotenuse.
iPhone: enter the number, then tap ± beside a signed field to make it negative.
Use signed deviations. Example: nominal 10, upper +0.05, lower −0.02.
Enter large diameter D, small diameter d and axial length L.
Interactive engineering diagrams, worked steps and trainee-friendly explanations. All numerical diagrams use deterministic QS calculations.
The actual feature centre is plotted against the basic/nominal centre. QS doubles the radial XY offset to calculate diametrical position error.
Watch the positional tolerance zone grow as the actual feature departs from Maximum Material Condition.
QS uses (P1→P2) × (P1→P3), then normalises the result to I/J/K.
Step through a common planar 3-2-1 training model. Each stage shows which motions are constrained.
A common trainee confusion: flatness controls a surface by itself; parallelism controls orientation relative to a datum.
The hole and shaft bands share one scale so clearance, transition or interference becomes visible immediately.
This quick visual uses the overall sample standard deviation, matching QS's shop-floor screening calculation.
Enter opposite and adjacent. QS calculates the hypotenuse and angle θ.
Training aid: Visual Assist explains engineering concepts and deterministic calculations. It does not replace the released drawing, controlled standard, approved inspection plan, software verification or qualified engineering judgement.
Independent guidance for trainees and experienced programmers working with ZEISS CALYPSO, PC-DMIS and PolyWorks.
Choose the software you use and QS will adapt the terminology while keeping the underlying metrology principles the same.
Build a training explanation for a common primary-plane, secondary-direction, tertiary-origin alignment. The drawing's datum reference frame always governs the real inspection.
A primary plane commonly removes one translation and two rotations. The secondary feature removes another translation and the remaining rotation about the primary normal. The tertiary feature removes the final translation. Exact constraints depend on datum-feature type and simulation.
Enter three XYZ points. QS calculates the normal from (P1→P2) × (P1→P3), normalises it to I/J/K and shows the dominant axis. Reversing point order flips the vector sign.
Useful for understanding constructed lines, hole-to-hole directions and the sign of a secondary alignment feature.
Choose a characteristic for a practical checklist of what normally matters when building the CMM inspection strategy.
Choose a subject, study the lesson, then work through the questions. Your progress is saved on this device.
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Terminology varies by software version and workflow. Use this as a learning bridge, not as a replacement for manufacturer training or controlled company procedures.
Independent training aid: QS is not affiliated with or endorsed by ZEISS, Hexagon Manufacturing Intelligence or InnovMetric. CALYPSO, PC-DMIS and PolyWorks are trademarks of their respective owners. Always verify alignments, probe paths, datum simulation and machine motion in the CMM software before execution.
Ask about inspection, GD&T, tolerances, metrology, SPC and root-cause analysis. Supported numerical questions can use Quality Inspector's deterministic calculators.
Work-data warning: do not paste confidential drawings, controlled technical data, customer information, export-controlled data or employer-restricted information unless your organisation has approved this use.
AI assistance is not product acceptance. Confirm results against the released drawing, approved inspection plan, controlled standards and qualified engineering judgement.
This local recorder is a convenience tool, not a controlled inspection system. Do not use it as the official quality record unless your organisation has approved the process and data handling.