Paper

Asbestos

Cotton

Clay

One way switch three poles

Mult position switch single pole

Two way switch

Intermediate switch

2 single way & 3 two way

4 single way & 1 two way

1 single way & 4 two way

3 one way & 2 two way

1

2

3

4

Go down wiring

Tunnel wiring

Stair case wiring

Hostel wiring