| Year | 1950 |
| Date | 10-Aug |
| Volume | 103 |
| Issue | 2,568 |
| Page | 208 |
| Category | Workshop |
| Part | |
| Title | A No. 2 Morse-taper Revolving Centre |
| Author | S.W.Blackley |
| Notes | Page 208xv. Half sectional elevation, bush, body, adjusting nut, centre, dimensioned details, race cover, end cap, adjusting screw, ball-race, revolving centre assembly |