Assertion: tourmaline's use | /r/HasProperty | diaphragms
Facets:
value: for optical filters
type: PURPOSE
value: for stove and kerosene heater windows
type: PURPOSE
value: for thermal regulators
type: PURPOSE
value: for pyrometers
type: PURPOSE
value: for marker dials for navigation compasses
type: PURPOSE
value: for oxygen-breathing equipment
type: PURPOSE
Source sentences:
text: Other uses include diaphragms for oxygen-breathing equipment, marker dials for navigation compasses, optical filters, pyrometers, thermal regulators, stove and kerosene heater windows, radiation aperture covers for microwave ovens, and micathermic heater elements.