related images
![](/world_history/old_devices/.cache/blast_furnace_in_middle_ages.png)
blast furnace in middle ages
![](/world_history/old_devices/.cache/19th_century_blast_furnace.png)
19th century blast furnace
![](/world_history/old_devices/.cache/blast_furnace.png)
blast furnace
![](/world_history/old_devices/.cache/hot_blast_furnace.png)
hot blast furnace
![](/world_history/old_devices/.cache/coal_furnace_with_ducts.png)
coal furnace with ducts
![](/world_history/old_work/.cache/tapping_a_steel_furnace.jpg)
tapping a steel furnace
![](/religion_mythology/bible/Childs_story_of_Bible/.cache/In_the_fiery_furnace.jpg)
In the fiery furnace
![](/holiday/Christmas/santa/.cache/santa_came_down_furnace.png)
santa came down furnace
![](/tools/fire/fireplace/.cache/furnace_poker.png)
furnace poker
![](/tools/fire/fireplace/.cache/furnace_poker_2.png)
furnace poker 2
![](/tools/fire/fireplace/.cache/furnace_slice_bar.png)
furnace slice bar
![](/household/heaters/.cache/furnace_cut_away.png)
furnace cut away
![](/household/heaters/.cache/Condensing_furnace_diagram.png)
Condensing furnace diagram
![](/tools/miscellaneous/belts/.cache/belt_direction_2.png)
belt direction 2
![](/tools/saws/.cache/bowsaw.png)
bowsaw
![](/tools/miscellaneous/animal_tools/.cache/bear_trap.png)
bear trap
![](/tools/hand_tools/woodwork/.cache/sandpaper_fine.jpg)
sandpaper fine
![](/tools/fire/flame/.cache/roaring_flame.png)
roaring flame
![](/tools/hand_tools/screwdriver/.cache/philips_head_screwdriver_2.png)
philips head screwdriver 2
![](/tools/hand_tools/various/various_2/.cache/punch_and_tongs.png)
punch and tongs
![](/tools/automotive/gasoline/.cache/gas_pump.png)
gas pump
![](/tools/lawn_garden/wheelbarrow/.cache/boy_pushing_wheelbarrow.png)
boy pushing wheelbarrow
![](/tools/miscellaneous/tape/.cache/tape_thick.png)
tape thick
![](/tools/hand_tools/measuring/.cache/thermometer.png)
thermometer