Bottom Box Part of a furnace control panel. Related Similar Images ...based on the tags: control-panels, gauges, kilns, notes-to-self, sepia, stencils... On the middle level of the Poacher House. For a detailed view of the chart see ‘See Reverse’. Fly ash, kicked up by downdrafts, rise again up the smokestack that is the signature feature of the plant. It’s a steel top hat. A 8-foot-tall volume indicator that could be read from across the beet boiler floor–convenient when the controls are 20 feet away. The new concrete workhouse, as seen through chickenwire. A leftover swatch remembers the last fabric sewn here. This volume gauge could be read from 30 feet away, which is useful when the control panels and valves are that far away. He bites. The scale of the grain hoppers helps tell the story of how large Hamm’s was in its day. Around the corner from the old boiler room.