No. 42. Jigs and Fixtures, Part II.—Open and Closed Drill Jigs.
No. 43. Jigs and Fixtures, Part III.—Boring and Milling Fixtures.
No. 44. Machine Blacksmithing.—Systems, Tools and Machines used.
No. 45. Drop Forging.—Lay-out of Plant; Methods of Drop Forging; Dies.
No. 46. Hardening and Tempering.—Hardening Plants; Treating High-Speed Steel; Hardening Gages.
No. 47. Electric Overhead Cranes.—Design and Calculation.
No. 48. Files and Filing.—Types of Files; Using and Making Files.
No. 49. Girders for Electric Overhead Cranes.
No. 50. Principles and Practice of Assembling Machine Tools, Part I.
No. 51. Principles and Practice of Assembling Machine Tools, Part II.