<https://community.secondlife.com/forums/topic/347530-lining-things-up-properly/#comment-1119635>
<http://schema.org/text>
"i work on the 1:2:4:8:16:32:64 scale whether is metres or mils. It gives the most halving steps before it rounds \nif work in the default 1/2, 1/4, 1/8, 1/16th etc then you reach a rounding much sooner when divide down \ne.g. 0.5 -&gt; 0.25 -&gt; 0.125 -&gt; 0.062 \nthe 1:2:4:... scale goes \n0.4 -&gt; 0.20 -&gt; 0.10 -&gt; 0.05 -&gt; 0.025 -&gt; 0.012  \n+ \nfor building I use the Edit boxes and put in the values direct. I always put the root prim on a exact global XYZ point. Like &lt;10.0,12.0, 24.0&gt; then orient it to &lt;0.0, 0.0, 0.0&gt; and then build off that \nlike if my root prim is size &lt;0.4, 0.4,0.4&gt; then I know the next same size is going to be 0.4 offset from the root prim. If the next is size &lt;0.8&gt; say then the offset is: 0.6 \nthe formula is: (&lt;next&gt; / 2)  + (&lt;root&gt; / 2). 0.4 + 0.2 = 0.6 \n+ \nif i am doing a circle or arc out of prims. then align root to &lt;0,0,0&gt; then set the circumference prim on the X. say 1.0m out from the root. then Link. then rotate the root to the desired degree. Then unlink. and rotate root back to &lt;0,0,0&gt; \nThen set the next circumference prim same as before. Link and rotate. Unlink. repeat until have all the circumference done then link all \n+ \nthe root prim is not always the actual root prim of the build. Most often is the \"root\" prim guide I am building off, for just a part of the build. using like a guide ruler. After built that part then discard/delete it   \n+ \neta: just also say that I dont much ever go under 0.2 for a whole prim. If need smaller than this then I will cut it. Just so that if after built the section and I need to scale down then 0.2 will let me resize the whole linkset down to about 16%. If whole prim was 0.012 then hardly resize down at all \neta more (: \nthe 1:2:4:8:16 .... scale also works better for land. minimum land parcel is 4x4. So I tend to go 8m or 12m rather than 10m. So a house can fit exact onto a parcel \n"
<https://community.secondlife.com/forums/topic/347530-lining-things-up-properly/?tab=comments#comment-1119628>