in all stages of worth and worthlessness; from theold worn out affair with three teeth and no spring,to the brand new one, so stiff that it takes a mansstrength to pull it around. We have inspected agreat many different sorts of pall wrenches in ourtime, some of which have been improvements uponthe… … for perforating plates in places almost inaccessible,there is no tool more useful than the common pallwrench. This is to be found in every machine shop, simplicity, its efficiency and durability ; all cardinalvirtues in a tool of this class, that has to encounterso much rough usage. In the ordinary…
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