[
{"codes":[null],"description":null},
{"codes":["1"],"description":"Hygristor"},
{"codes":["2"],"description":"Chilled Mirror"},
{"codes":["3"],"description":"Other"},
{"codes":["C"],"description":"Capacitance"},
{"codes":["E"],"description":"Electric"},
{"codes":["H"],"description":"Hair hygrometer"},
{"codes":["P"],"description":"Psychrometer"},
{"codes":["T"],"description":"Torsion"}
]