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/11731/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 11731,
    "uuid": "fd8724bbe17ce2ab147b13c368da3811",
    "title": "Paul Scherrer Institut -Rotating Drum Impactor",
    "abstract": "Three Rotating Drum Impactors (RDI) are operated for the CLEARFLO monitoring project at Marylebone Road, North Kensington and Detling project sites in London. These particle samplers measure the elemental composition of particle in the ranges PM10-2.5, PM2.5-1.0, and PM1.0-0.1 starting from January 2012 with 2 hourly resolution.",
    "keywords": "",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/7705/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/7706/?format=api"
    ],
    "instrumentType": "particle_counter",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/45484/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/45483/?format=api"
    ]
}