Get a list of Instrument objects. Instruments have a 1:1 mapping with Observations.

### Available end points:

- `/instruments/` - Will list all Instruments in the database
- `/instruments.json` - Will return all Instruments in json format
- `/instruments/<object_id>/` - Returns Instruments object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `instrumentType`

### How to use filters:

- `/instruments/?title__startwith!=Instrument.title: DETAILS NEEDED`
- `/instruments/?uuid=c7fa005e2095425392b18adbd7b40617`
- `/instruments.json?instrumentType=radiometer`

GET /api/v2/instruments/20070/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 20070,
    "uuid": "2509209077c148b0b019b8ed2ffd8624",
    "title": "Reading -atmospheric electric potential gradient",
    "abstract": "Potential gradient is measured using a JCI Chilworth 131 adverse conditions field meter.  It is mounted on a 3m metal pole on the atmospheric observatory, which has a number of metal structures (including 10m tower, fence) within 30m of the senor.  Calibration of the field meter alongside a longwire antenna was performed during 2006 to establish the site distortion factor.  This correction factor is applied to the raw data to derive the potential gradient at 1m.\r\nCalibration publication: A.J. Bennett and R.G. Harrison, In situ calibration of atmospheric air conductivity measurements Rev Sci Instrum 77, 016103 (2006)\r\n\r\n\r\nThis is used in the  Glocaem potential gradient network",
    "keywords": "glocaem",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9019/?format=api"
    ],
    "instrumentType": "instrument",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76355/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141034/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141037/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141038/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76356/?format=api"
    ]
}