if (input_units.volume == CUFT || import_source == SUUNTO) {
volume_of_air = type->size.mliter * 28.317; /* milli-cu ft to milliliter */
if (input_units.volume == CUFT || import_source == SUUNTO) {
volume_of_air = type->size.mliter * 28.317; /* milli-cu ft to milliliter */