The Hobbs meter is on the right side of the cockpit like in
https://www.planesales.com.au/Uploads/Listing/Original/ID01403-4784-1-372-1977-Piper-Seneca-II.jpg
The endurance and range computer populates every second the properties
/consumables/fuel/endurance-remaining,
/consumables/fuel/range-remaining-nmi,
/consumables/fuel/range-total-nmi.
