Oiltank ultrasonic sensor mount

I wanted to measure the level of my home heating oil tank with esphome.io and home assistant. Settled on a waterproof ultrasonic sensor with a single transducer as it fits nicely into the hole many oil tanks have to fit an Apollo Watchman or similar commercially available sensor.

Sensor used:
- https://www.amazon.co.uk/DollaTek-Waterproof-Ultrasonic-Measuring-Transducer/dp/B07PMGJ231?dchild=1&keywords=waterproof+ultrasonic+sensor&qid=1631399412&sr=8-5&linkCode=sl1&tag=woodwardwebcom&linkId=902bd192c1b2cde61cf918b5ff73501c&language=en_GB&ref_=as_li_ss_tl (UK)
- https://www.amazon.co.uk/DollaTek-Waterproof-Ultrasonic-Measuring-Transducer/dp/B07PMGJ231?dchild=1&keywords=waterproof+ultrasonic+sensor&qid=1631399412&sr=8-5&linkCode=sl1&tag=woodwardwebcom&linkId=902bd192c1b2cde61cf918b5ff73501c&language=en_GB&ref_=as_li_ss_tl (US)

Printed with raft and supports for the body as it ended up being a complex shape.

Insert the sensor into the body and the screw the sensor onto the oil