1. The right tool for the right size
The Pinch Test
The right tool for the right size
NNIN Document: NNIN-1287
Rev: 10/2012
National Nanotechnology Infrastructure Network
Copyright Georgia Institute of Technology 2009
Permission granted for printing and copying for local classroom use without modification
Developed by Pamela Gilbert-Smith
Development and distribution partially funded by the National Science Foundation

2. How To Pinch NO
YES

3. 10-5

4. Centi-

5. Penny

6. Animal Cell

7. Red Blood Cell
Credit: SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY

8. Sugar crystal

9. Micro-

10. Hydrogen Bonds

11. Flower/stamen/pistal/pollen – your choice of any of these

12. 10mm

13. 10-3

14. cat

15. molecule
Credit: LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

16. Cell Nucleus

17. flower

18. Covalent or Ionic Bond

19. Atom http://en.wiktionary.org/wiki/atom
Available under the Creative Commons Attribution/Share-Alike License

20. rust

21. Insect’s eye

22. Nano-

23. 1m

24. Chewing gum

25. Buying a diamond http://en.wikipedia.org/wiki/Diamond
Available under the Creative Commons Attribution-ShareAlike License

26. egg

27. Insect hairs

28. 103

29. Plant Cell

30. tomato

31. 10-9

32. Diameter or width of bracelet

33. Flip flops

34. Angstrom