Sigh. Back in May, Bus identified a wrench from a Civil War photo as a Taft's pattern Railroad Wrench. With that kind of documentation, one of these would be an ideal example of the screw wrenches issued by the army. So I thought I'd look into getting one. Size? The manual says the screw wrench issued weighed 2.6 pounds. That's all I know about the wrench that is supposed to be in the kit. Looks like the price makes it out of the question -- unless I find one at a garage or farm sale, or a flea market.