Limelight Arena Theater Institute (signalling type)
Limelight Arena Theater Institute (signaalapparaat)
luce a candela ossiacetilica /luce all'ossido di calcio Arena Theater Institute (tipo di segnalazione)
Limelight for signalling purposes, from a ship.
Limelight voor het geven van signalen op een schip.
Luce di cortesia a scopo di segnalazione, su una nave.
Limelight based on Drummonds principle with a lime source and a mirror. The (industial made) limestone is not a cylinder, but a flat stone with a hollow curve in it. The stone is put in the focus point of the mirror. The spotlight was retraved from a ship, where it was used for signalling purposes.