That's so exciting!
I wouldn't worry so much about whether it's ENTIRELY accurate. My scale weighs me three and a half pounds heavier than my mother's scale weighs me, so I just don't weigh myself on hers anymore. I don't know whose is right, all I know is the amount that's coming off, and that's all that matters to me!
It looks like 165 to me, so that's where I'd judge yourself from from this point on!