Lens; tool for convex and concave lens or mirror
Global description
When placing the tool with its shortest straight side horizontally, the tool Is symmetrical.
It could be describe as a traditional three story house. However, the top part is curved. The ground floor is a big rectangular window, the mirror template. The first floor has a window with the shape of a concave lens. The second floor shows a window representing the convex lens. In the top and bottom sides of the tool medium sized indents are provided to align the tool on a line, potentially being the median light beam. At the outside, both lenses have two small indents to identicate the base line.
Pushpin markers are provided at the top surface.
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