Tolerance Visualizer
See what your tolerance actually means. Adjust nominal dimension and tolerance class to visualize the allowable variation.
10 mm200 mm
±0.05
mm
±50
µm
100
µm total band
Human Scale Reference
Your tolerance of ±0.05 mm (50 µm) compared to:
Red blood cell8 µm
Your tolerance is 6250.0× larger
Human skin cell30 µm
Your tolerance is 1666.7× larger
Human hair70 µm
Your tolerance is 714.3× larger
Sheet of paper100 µm
Your tolerance is 500.0× larger
ISO Tolerance Grades at 50 mm
IT5
±4.1 µm
IT6
±5.9 µm
IT7
±9.4 µm
IT8
±14.7 µm
IT9
±23.6 µm
IT10
±37.7 µm
IT11
±58.9 µm
Application Guidance
Precision
Standard precision CNC machining. Achievable on a well-maintained machining centre with appropriate tooling. Suitable for most engineering fits.
Examples: Locating pins, gear bores, assembly datums, pneumatic fittings