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/25986/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 25986,
    "uuid": "e30e88421dde44ecb46f09736f289e5f",
    "title": "University of Leeds: Licor Li-7500 gas analyzer",
    "abstract": "The University of Leeds' LI-COR LI-7500 open path gas analyser operates at infra-red wavelengths measuring the absorption due to carbon dioxide and water vapour concentrations at specific wavelengths along its 0.125m measurement path. Internally-stored calibration data are used to convert these absorption values to a mole concentration for each gas. Measurements are made at 20 Hz frequency.",
    "keywords": "CO2, H2O, water vapour, carbon dioxide",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9532/?format=api"
    ],
    "instrumentType": "other_instrument_type",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108690/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108691/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108692/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108693/?format=api"
    ]
}