Related Clues:
- Transparent 3-sided object that separates light into colours
- Three-sided object that separates light into colours
- Transparent optical device
- Piece of glass in optical instrument
- Triangular piece of glass, optical device
- Triangular, glass optical device
- Triangular piece of glass to deviate a beam
- Glass triangle that separates light into colours
- Glass triangle, separates light into colours
- Triangular shape of glass or quartz, breaks up a beam
- Type of polyhedron
- The boy's see-through could make the most of things
- It's for the boy to see this through
- Leonard is the one for the seethrough
- A distorter of Leonard