The Homare was also launched in 1920. Unlike the Asahi that was made of gunmetal, the Homare microscope was made from brass (an alloy of copper and zinc). Following the launch of this product, brass microscopes became the mainstay.
Both the Asahi and the Homare microscopes featured an umbrella-shaped part in the upper column, called an umbrella-shaped fine tuning mechanism. At that time, microscopes were not equipped with a coarse motion mechanism (a mechanical mechanism to move the microscope head in order to focus the image). Therefore, there were two methods for focusing the image: (1) roughly matching the focus by manually moving the microscope head up and down and (2) accurately finding the focus using the umbrella-shaped fine tuning mechanism.