In addition, he
has made additions to 60 of his existing entries. As before, each
listing shows the maker's location, history, period of operation and
known products, with profuse illustrations taken primarily from catalogs
of the period.There
is, once again, a Wrench Identification section that cross-references
patent dates and trade names (frequently the only marking on a wrench)
to the actual maker.
As with Cope's
previous pioneering works on American machinist's tool and their makers,
this volume provides an extremely comprehensive and valuable historical
directory to this fascinating tool and its underlying technology.
It is a truly unique reference source for collectors, dealers and