Here is the attachment. am I drawing the correct point from one corner to another corner. From this floor plan .. the sun rise from right, about 3 O'clock direction and go down at 9 o'clock direction. But it is not exactly that 90 Degree and 180 degree accurate, does it matter a lot? The compass that i bought for 2 dollar at ChinaTown is not so good cause it keep floating ..(the needle) ... until I blur blur. If I buy a LuoPan .. does it help, where can i find you and meet you personally.