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/12973/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 12973,
    "uuid": "8b3ac252d05a4b7eac85b0bcb1b765d2",
    "title": "University of East Anglia: Gas Chromatograph measuring CH4",
    "abstract": "The Flame Ionisation Detector (FID) on the Greenhouse Gas GC (Perkin Elmer, Clarus 500 Greenhouse GC) at Weybourne Atmospheric Observatory (WAO) is used to make quasi-continuous measurements of methane (CH4) in atmospheric air. Samples are analysed every ten minutes and with reference to the NOAA2004 scale for CH4.The measurements from this instrument are part of the National Centre for Atmospheric Science (NCAS) Atmospheric Measurement Facility (AMF) long-term measurement strategy.",
    "keywords": "Gas Chromatograph, CH4, AMF",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9541/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9543/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12925/?format=api"
    ],
    "instrumentType": "gas_chromatograph",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49707/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/49708/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108929/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108930/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108931/?format=api"
    ]
}