How to make a Continuity Tester at home

Please watch: "How to make a simple Toy Boat with DC Motor at home"
https://www.youtube.com/watch?v=Ul6Qa1rSzyM --~--
In this tutorial I'm showing you how to make a continuity tester at home using syringe. Hope you'll like it.

Things you required :-

1) - 2×5 ml Disposable Syringe
2) - 2×2 ml Disposable Syringe
3) - 2×AAA Battery
4) - 2× Sewing Machine's Needle
5) - 3v 5mm LED Bulb
6) - Wires
7) - Ball Pen Refills
etc....
Thanks.

Видео How to make a Continuity Tester at home канала Kushwaha Labs