- Twine phones
- Using Bells phone
- Breech loading Gingal (Chamber out)
- Edison with his Phonograph
- Frick portable steam engine of 1877
- Roller Washing Machine
- The Mather Kier, cross section
- Horizontal Drying Machine
- High Pressure Blow-through Kier
- Cross-staff
- Improved high speed engine and dynamo - fig 2
- Improved high speed engine and dynamo
- Microscope