Error while doing my pre flight checks in the cockpit. I wonder if you can spot it?

Error while doing my pre flight checks in the cockpit. I wonder if you can spot it? Wrong Altitude? A flight error in my pre flight checks before takeoff. ★Flying Life★ ✅[SUBSCRIBE] https://bit.ly/30c6h2r ✅[FACEBOOK FLYING LIFE COMMUNITY]   / jeffnuddflyinglife   Altimeter fix that John Wood at Perranporth kindly sent me: https://www.mrkent.com/flying/altimeter/ Friends Channels: Let's Go Flying    / @letsgoflying   Rory On Air    / @roryonair   Ben Atkinson    / @benatkinsonvideos   Equipment used: Headsets: Bose A20 headsets with bluetooth. Cameras: 3x GoPro 6 Hero cameras. iPhone 10 for other footage. Storage: 3x Sandisk extreme micro SD cards 64GB. Navigation: Samsung tablet with built in GPS. SkyDemon. 1:500,000 Aeronautical chart. Cables and audio: Stereo 3.5mm plug to socket jack lead (3 metres). 0.3m short 3.5mm jack to jack aux cable. Pilot communications PA90 pilot headset connector cable for audio devices. Pro 3.5mm mic adapter. Fentranix audio attenuator 40dB. Other: Griffin USB power car charger. Music: All music is provided by the YouTube music library. Creative commons music used for our videos. Creative Commons Information: https://creativecommons.org/licenses/ #cornwall #cockpit #preflightchecks #howtobeapilotunitedkingdom #flyinginseptember #flying life #cornwall #mypilotvlog2020 #ukvlog2020 #flyingvlog2020 #englandvlog2020