[8] Over the years this saw bench assembly together with the radial arm docking saws connected with it had been owned by a series of organisations which used them to manufacture roof trusses. In 1974 the plaintiff had been employed by the then owner of the assembly and saws to fabricate trusses. He was then employed with a number of other persons, presumably as labourers to assemble roof trusses for Wilson Hart. In about 1983 the plaintiff with another person was persuaded by Wilson Hart to become a contractor with another person and be paid piece rates for the assembly of roof trusses rather than continue as a wages employee. When the legal relationship between Wilson Hart as manufacturer of the roof trusses and the plaintiff changed from an employer/employee relationship to one of contractor/subcontractor Wilson Hart took orders for roof trusses of various sizes from building contractors, prepared the design, and gave the design to the plaintiff as sub-contractor. The "arrangement" then was that the plaintiff and his partner, a Mr Scott, would employ the other former employees of Wilson Hart who had previously manufactured the roof trusses and use Wilson Hart's plant and equipment and timber and all the other things necessary to manufacture the roof trusses in the factory owned by Wilson Hart. One resulting change in outcome was that the plaintiff and his newly found partner then became contractors who were paid on a piece work basis for the trusses they actually assembled using Wilson Hart's timber and equipment in its factory. A significant difference seems to have been that the employer-employee relationship between Wilson Hart and all the men previously employed by it to manufacture roof trusses ceased. The new relationship was one of contractor and sub-contractor between Wilson Hart and the new partnership of which the plaintiff was a partner. Other former employees of Wilson Hart became employees of the new partnership. Persons ordering roof trusses would apparently enter into a contract with Wilson Hart who would then subcontract with the plaintiff and his partner to assemble the roof trusses using the equipment supplied, powered and maintained by Wilson Hart as well as the various components of the roof trusses also supplied by that company and the plaintiff and his partner would employ men previously employed by Wilson Hart to do that work.