This video shows how to use a calliper to measure objects. Microbiology is a term derived from the Greek language mikros(small), bios (life) and ????a (logia). It involves studying microscopic organs, either acellular (have no cells), unicellular (have single cell) and multi-cellular (colony of cells). This discipline has several sub-discipline like mycology, bacteriology, virology, parasitology among others. This is a microbiology resource lesson on calipers and vernier scaling system.