All changes to tower
| Date | Change | Source |
|---|---|---|
| 31 Aug 2020 | fr1: date confirmed | Martin Smith via e-mail |
| 21 Jun 2016 | all: turning,frameid added; 5,6: founder amended; | David Sloman via 00011669 |
| clk: wt,diam added; fr1,fr2: added | David Sloman via 00011669 | |
| 11 Feb 2007 | Tenor nominal added (E-49c) | Auto added via pNBR |