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/7476/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 7476,
    "uuid": "9667a2ad9e1c4521aaecf863a8d0547b",
    "title": "Cow Lane - Height Barn Microwave Link",
    "abstract": "Microwave link set up between the Cow Lane site and the Height Barn site. This method of estimating rainfall, the dual-frequency microwave link, provides continuous-time measurements of path-averaged rainfall close to ground level. Links can provide a useful complement to traditional methods and will be of particular value in situations where rain gauges and radar have difficulties.",
    "keywords": "",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4852/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4853/?format=api"
    ],
    "instrumentType": "radar",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31292/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/31291/?format=api"
    ]
}