To keep the mirror's weight to a minimum it consisted of inch-thick top and bottom plates sandwiching a honeycomb lattice.. 
nọmba adaju (fun apẹrẹ nọmba gidi todaju, nọmba onípìn todaju, nọmba odidi todaju) jẹ nọmba topoju odo lọ, fun apẹrẹ , 1.44, 1.. 