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/41192/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 41192,
    "uuid": "725a35dac1aa4d60b671cc73947d712e",
    "title": "University of Bristol Medusa GC-MS A",
    "abstract": "A trace gas analyser that uses gas chromatography-mass spectrometry (GC-MS) with a Medusa pre-concentration unit (serial number: Medusa13) to make  measurements of a wide range of greenhouse gases and ozone-depleting substances, used at Tacolneston atmospheric monitoring station. See Miller et al. (2008)  for more instrument details: https://doi.org/10.5194/10.1021/ac702084k",
    "keywords": "bristol-gc-ms-a",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12779/?format=api"
    ],
    "instrumentType": "",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200292/?format=api"
    ]
}