Electric Light Bulbs

1 Hairdryer
2 Hairdressing
3 Water Faucet
4 Painter At Work
5 Water Pipes
6 Railroad
7 Railroad 2
8 Railroad 3
9 Hand Sickle
10 Railroad 4
11 Machine Tool On Wood
12 Tank Truck
13 Calculator
14 Stone Quarry
15 Bulldozer 2
16 Wheelbarrow
17 Carpenters At Work
18 Tree Falling
19 Electric Drill On Wood
20 Sawmill
21 Spade
22 Electric Sewing Machine
23 Hoeing
24 Electric Railroad
25 Rolling Shutter On Storefront
26 Pistol Water Sprinkler
27 Electric Light Bulbs
28 Generator Unit
29 Electric Welding Machine
30 Hydraulic Auto Lift
31 Industrial Textile Machine
32 Large Truck
33 Shipyard
34 Loading a Ship
35 Fishing Boat
36 Ferry Boat
37 Sail Boat
38 Out Board Motor
39 Sonnar
40 Blast Furnace
41 Steel Works
42 Bulldozer