Group of specimens showing "Investment" mould precision castings
- Made:
- 1959
Group of specimens showing "Investment" mould precision castings. (Lost-wax process) 1959 (1) Sectioned "lost-wax" mould for guide-vane. (2) Wax pattern for guide-vane. (3) Cast-steel guide vane. (4) Turbo charger blade segment oil cooler header box.