Further to my previous posting on this tower I have had a look at Taylors inspection books: 1. 28.25" Warner 1861 2. 29.625" 1666 3. 31.75" 1666 4. 35" 1621 5. 38.125" 1610 6. 41.5" Warner 1861 This tallies with the diameters and dates given in the original enquiry. Taylors recast the 3 trebles in 1912, not 1902 as stated! Apologies for previous errors GAD