Below are the weights of St Columb's Cathedral bells Londonderry

Original Eight

 
CWTS
Note
Founders
Treble
5 ½
F
John Rudhall Glocester 1812
2
5 ¾
E
John Rudhall Glocester 1812
3
6 ½
D
John Rudhall Glocester 1812
4
7 ½
C
John Rudhall Glocester 1812
5
9
B Flat
John Rudhall Glocester 1812
6
10
A
John Rudhall Glocester 1812
7
12 ½
G
John Rudhall Glocester 1812
8
17
F
John Rudhall Glocester 1812

Present day 10 with 3 flats

 
CWTS
QRS
LBS
Note
Founders
Treble
5
1
21
F#
Gillett & Johnston Croydon 1929
2
5
2
8
E
Gillett & Johnston Croydon 1929
Flat 2
5
2
27
D #
Gillett & Johnston Croydon 1929
3
6
0
14
D
Gillett & Johnston Croydon 1929
4
6
2
18
C#
Gillett & Johnston Croydon 1929
Flat 4
7
1
14
C
Gillett & Johnston Croydon 1929
5
8
0
6
B
Gillett & Johnston Croydon 1929
6
10
0
0
A
Gillett & Johnston Croydon 1929
Flat 6
11
3
7
G#
Gillett & Johnston Croydon 1929
7
13
2
10
G
Gillett & Johnston Croydon 1929
8
16
0
20
F#
Gillett & Johnston Croydon 1929
9
23
0
4
E
Gillett & Johnston Croydon 1929
Tenor
32
0
5
D
Gillett & Johnston Croydon 1929