Here again, the only way of giving the correct solution of each problem is by means of the transparent stencil furnished with each package of test blanks. That dot which can be “cut out” and still leave a perfectly symmetrical figure is the one which should be circled in each pattern. This is frequently at the very centre of the pattern, although the centre is not the correct one if by removing it the pattern is left unsymmetrical. _MENTIMETER NO. 5_: Dividing Geometric Figures. Only a transparent stencil can give a clear impression of the correct solution of each figure. In dividing a circle into two equal parts it makes no difference in what direction the diameter is run—in other words, any correct solution should be accepted and given full credit. _MENTIMETER NO. 6_: Completion of Form Series. Only the stencil supplied with the test blanks can represent adequately the correct completion of each series. No credit is given in a series unless each blank is correctly filled. _MENTIMETER NO. 7_: Checking Identity of Numbers. 1. Same 2. Different 3. Different 4. Different 5. Same 6. Different 7. Same 8. Same 9. Different 10. Same 11. Different 12. Same 13. Different 14. Different 15. Same 16. Different 17. Different 18. Different 19. Same 20. Different 21. Different 22. Same 23. Same 24. Same 25. Same 26. Different 27. Same 28. Same 29. Different 30. Same _MENTIMETER NO. 8_: Digit-Symbol Substitution. The reader may, by reference to the Key printed at the top of the test sheet, determine for himself the correctness of any symbol written by a candidate. The stencil furnished with the Test Blanks makes it possible for one to score this test very accurately with a very small expenditure of time and effort. In scoring this test with the stencil the correctness of the entire list of 100 characters can be checked in less than a minute by an ordinary clerk. _MENTIMETER NO. 9_: Completion of Number Relation Series. No credit is to be given on any line unless all of the missing numbers are correctly supplied. The score is the number of _lines_ completed correctly in every detail.