1. Telescopes: A telescope is an optical instrument that aids the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescope was invented in Netherlands at the beginning of the 17th century, by using glass lenses. It has use in both terrestrial applications and astronomy. 

There are many types of telescopes, 

for example, radio telescope, X-ray telescope, optical telescope, etc. They are generally made up of two lenses placed at a fixed distance to enlarge far away images.

2. Fan: A fan is a machine used to create flow within a fluid, typically a gas such as air. The fan consists of a rotating arrangements of blades which act on the fluid. The rotating assembly of blades and hub is I known as rotor. A fan concentrates the airflow in the required direction. The punkah fan was used in India about 500 BC. It was a handheld fan made of bamboo strips and other plant fibre. This evolved over the years to the modern fans we see in our rooms daily now.

3. Sewing machine: It is a machine used to stitch fabric and other material together with a thread. Sewing machines were invented during the Industrial Revolution to decrease the amount of manual sewing work. In a modern sewing machine the fabric easily glides in and out without the inconvenience of needles and thimbles but the earlier sewing machines were partially manual and helped the tailor do the stitching faster saving his time.