25. Diagram of assembly of inertia type speed regulating controller Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
26. Electro-hydraulic pump engine Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
27. Fuel oil heater steam boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
28. Refractory furnace linings compared between the navy and merchant installations Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
29. Two drawings showing half outside elevation and sectional front elevation of steam engine. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
30. Steam boiler showing steam and water from risers Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
31. Smoke indicator, sectional view through boiler uptake Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
32. Comparison of 2 stud tube division walls - single vs double uptake divided furnace boilers Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
33. Steering gear wheel (ram) and telemotor installed on ship Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
34. Torpedo tubes from the destroyers Pensacola class, Mahan class, Sampson class, Benham class, and North Carolina class Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
35. Wide view of factory with automated machines Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
36. Interior view of a cruising tubine Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
