About this objectA collection of three two-piece wooden patterns used in a foundry to cast machine parts. Part 1 - flat inner faces assemble to make a pattern with triangulated sides, extended top with rectangular shape and deep slot. Part 2 - flat inner faces assemble to make a cylindrical shape with wide collar that extends to right angle arm with rounded top. Part 3 - flat sides assemble to make a cylinder with wide collar with peg on one side and further cylinder at right angles to top.