Petit & Fritsen

[Mike Chester]

A friend of mine has bought a set of 8 bells from P & F, tenor around 
1.5cwt. He intends to hang them in a new garage - eventually. (Cost of 
the bells is about £5.5k - should you want a set yourself!)

They are tuned as one would expect, except that each has, IIRC, 3 
vertical "tuning" marks 2/3" long about half way up the bell, spaced 
out around the circumference. To my untrained eye there was no pattern 
in the spacing, some being quite close to another. Is this intended to 
eliminate some "wobble"? Is it a standard Dutch tuning method?

Mike