{
  "params": {
    "height": {
      "type": "range",
      "min": 6,
      "max": 14,
      "step": 0.5,
      "default": 9,
      "label": "Height",
      "describe": "Tower height in metres to the platform under the wheel. 6 is a small homestead pump, 14 a tall one that clears the trees."
    },
    "tower": {
      "type": "choice",
      "options": [
        "steel",
        "timber"
      ],
      "default": "steel",
      "label": "Tower",
      "describe": "steel (galvanised angle-iron lattice) or timber (heavy wooden derrick with plank bracing)."
    },
    "blades": {
      "type": "choice",
      "options": [
        12,
        18,
        24
      ],
      "default": 18,
      "label": "Blades",
      "describe": "Number of sheet-metal blades on the wheel: 12 (sparse, early), 18 (classic), 24 (dense, big-pump wheel)."
    },
    "vane": {
      "type": "color",
      "default": "#a8483a",
      "label": "Tail vane",
      "describe": "Paint on the tail vane that keeps the wheel into the wind (blank, no lettering). #a8483a red, #d8cdb5 cream, #3e5566 blue, #8f9396 bare steel."
    },
    "tank": {
      "type": "toggle",
      "default": true,
      "label": "Stock tank",
      "describe": "Round galvanised stock tank full of water beside the tower, fed by the pump spout."
    }
  },
  "presets": {
    "homestead pump": {
      "height": 6.5,
      "blades": 12,
      "tower": "timber",
      "vane": "#d8cdb5"
    },
    "ranch windmill": {
      "height": 10,
      "blades": 18
    },
    "tall steel mill": {
      "height": 14,
      "blades": 24,
      "vane": "#8f9396",
      "tank": false
    }
  },
  "night": null
}