Capricorn LT3 Christmas Light Bulb and Fuse Tester

Tester for miniature Christmas Lights. This model is by Capricorn electronics, model #LT3. It also has contacts to test fuses and bulbs. Update - a new type of tester with a differential probe tip has been introduced. With this tester you place the probe between the 2 wires that exit the socket. It is better at finding bad bulbs than the earlier type, especially with net lights and wire sculptures.