Alfred W. Marshall

• Gear wheels and gear cutting
• Micrometers, slide gauges and calipers
• The Wimshurst Machine
• Magnets and magnetism simply explained
• Micrometer
• Micrometers - Slide Gauges and Calipers - Principles, Construction, Operation and Use of Appliances for Fine Mechanical Measurements
• The "Wimshurst" machine, how to make and use it