2. Affordable... *The initial cost and any maintenance and parts must be cheap enough for the people involved* For example, this piece of machinery is too expensive for use in an LEDC. More relative equipment for use in an LEDC.
3. Sustainable... *It must provide long term use for the people with very little impact on the environment* The water pumps used here are worked by hand so are friendly to the environment. Also they don’t need much maintenance so last for a long time.
4. Right for the place... *Local technology and expertise should be used whenever possible* A sickle, used for harvesting grain, is a well known tool by the locals and their expertise with the tool make it appropriate for the area. As well as these examples, for a case study see House construction in Arizona, USA, using straw bales.
5. Right for the people... *The project should be what the people need. It also should be run by local people with very little outside help* The solar cooker is easy to use so expertise are not really needed and locals can operate them easily.
