The way you use is accurate. Other ways are to use some roulette tape measure or to find some good wallpaper like that
It's normal in the morning everyone to be taller than at night (around 1% taller) because of the gravity (all night long, when you sleep you're in horizontal position).
Many of the incels forums are represented by teenagers (some of them from countries where the average people don't know how many angles are there in a triangle, where is Iran (or where is Cuba; where is North Korea), who was Jefferson Davis (or who is their vice president right now)), there are only some people who really know some science and almost no one understands the incelology. They misuse terms, for them many scientific facts are "bluepill", only the "cherry picked" statistics and studies who do support their laziness and pessimism (the blackpill "It's over!" + "It never began!") are highly valued there and if one wants to spend there his time, he should be very patient, very objective and very well informed, otherwise they'll brainwashed him that "it's over, never begins, there is only the blackpillism and "cope or rope"." Sometimes there are valuable ideas, experiences and it worth to read it from time to time, but as I said, only if you're well prepared (knowledge, stable EQ, not easy to get brain-washed by all the blackpilled bigots, who never will accept the meta-pill objectivism and patient). For example, the observation that the females (but not all of them,
this is an important point that they're missing, that there are different types of females) who want a tall man don't look just for a "taller than me" man but for a "taller than most of the other males". You see? This explains why sometimes even when you're taller than a girl, she may think you're not tall enough (for her).
Read my favorite money-related (capital-related) analogy: I am not that rich but at least I own an apartment which costs around RMB 350 000 (USD 50 750). Some Chinese females own nothing. They rent a flat, sometimes shared with another one or two girls or they live in some dormitory (like 3-4 or more in a room)! And still some of them will think of me as a poor man because I am carless (no car), I am not a business owner (still no own company), etc. They are as poor as church mouse but still will think that I am the poor one (not rich enough for them). Well, my friend, the same is the situation with your height. You're not a shortcel (in China) and you're even taller than 30% (approximately) of the Chinese females but still, there are short ones who'll think "No, he's short. I need a 1.88 m somebody." So, concretely about your ready-to-be-a-shortcel problem: because after the height wise geo-minn (moving to the West for edu-maxx) you'll be perceived as a
shortie or
shortcel there (at least in the eyes of 80% of the Westerners and some of the Asians, for example all those tall Koreans, Northern Chinese like 东北人, some Mongols.) you have to compensate it in a wise way,
even if you choose to be a volcel for the time being. Why? At least for your own self-esteem and being healthier: health-maxx, including gym-maxx, martial arts-maxx (at least some non-contact like Taichi 太极拳) will improve your vision and at least the people will not see you as a manlet. See this man -- exactly 1.64 m, a US latino sportsman, who looks pretty good after all this gym-maxx (sport-maxx):
.
And when you add up some more personality related maxx-es like art-maxx, edu-maxx, money-maxx, there will be some woman for you, I bet up to 98%.