Chart Projector bon CP-50 The bon CP 50 chart projector with it's specially manufactured optotypes,high resolution lenses and halogen illumination provides a brilliantly clear test each and every time. With forty test charts to choose from the CP50 offers an enormous range of sight testing options. A very quick test change within 0.03 seconds. Single or linear presentation of optotypes possible. Two testing sequences each with 30 tests can pre programmed. The red green filter can be used with every test chart for greater flexibility. A polarisation filter can be switched in for all monocular tests. Contemporary pictures for testing children. Infra red remote control for a comfortable, problem free refraction. The chart projector shuts down automatically after 10 minutes without use, thus saving energy and prolonging bulb life. A choice of wall or refraction unit mounting plate.