It gives me great pleasure to know that at last a book has been written about the marks on weights and measures. A wide spectrum of people including students and collectors of antique scales, balances, weights and measures have long wanted a guide to the interpretation of these marks. Beginning in the early 1970s I researched and collected marks with a view to producing such a book. I was greatly assisted by many fellow collectors both in this country and abroad whose names are included in the acknowledgements which follow. Indeed, it now seems hardly believable that I gave my first talk on this subject to the Pewter Society as long ago as 1977. I am particularly grateful to Diana Crawforth-Hitchins, the widow of Michael Crawforth, for giving me the records of marks collected by her late husband for inclusion in my intended book.