MECHANICAL DEVICES

Certain mechanical devices(non-electric) should perhaps be considered these days. At one time, these were in great use around the world and did not involve electricity or carbon based fuels as a rule. These devices or instruments are: The bicycle,manual typewriter, mechanical typewriter, mechanical adding machine or calculator,wind-up watch or clock, push lawnmover (non-gas operated or non-electric.etc. All of these can be considered as 'environmentally friendly' but,since people are basically lazy(which means they tend to satisfy their needs and wants with minimal or minimum effort) they will continue to use electric and gas-operated devices.