occulting

This, the captain said, was an occulting white light, that was visible for twelve out of every fifteen seconds.

After dinner that night they were abreast of the Gulf Rock, and Brand pointed out to his wife its occulting gleam from afar.

In the case of a first-order fixed light the cost of conversion to an occulting characteristic does not exceed 250 to 300.

Fixed-light optics are employed to meet such cases, and are generally fitted with occulting mechanism.

For occulting apparatus either weight clocks or spring clocks are employed.