| Year | 1937 |
| Date | 07-Oct |
| Volume | 77 |
| Issue | 1,900 |
| Page | 353 |
| Category | Workshop |
| Part | |
| Title | The Use of a Micrometer Adjusting-Index for Interpolating and Marking-Off |
| Author | G.G. |
| Notes | Marking-out work, angular measurement, the need for interpolation, the adjustable index, Mr Jenning's form, calibtation of the micrometer adjustment, result of calibration, using the "mike", to divide a circle into degrees, procedure, to divide a dial into 100 parts by interpolation, procedure, setting work to a given angularity, further description, details of micrometer adjusting-index, dimensions of taper sided rod or link, scribing opposite sides |