Ajax Scientific double Bi-concave lens. Made of polished glass with ground edges. Used for reducing the size of speading out light, with two inward curving symmetrical faces. 50-millimeters diameter. 150-millimeters focal length.
- Ajax Scientific double Bi-concave lens
- Made of polished glass with ground edges
- Used for reducing the size of speading out light, with two inward curving symmetrical faces
- 50-millimeters diameter
- 150-millimeters focal length
- Ajax Scientific double Bi-concave lens
- Made of polished glass with ground edges
- Used for reducing the size of speading out light, with two inward curving symmetrical faces
- 50-millimeters diameter
- 150-millimeters focal length