Please look into the Drawing image that i have attached. I would like to know the following things.
1) What do these highlighted bubbles signify ? Are they Datum Targets ? If so, whats its significance ?
2) How can i draw these Horizontal and Vertical lines, as shown in the image while Drafting?
I believe they arent grid lines.
3) X,Y & Z is mentioned in the Bubbles, Does it signify the position of the component along these axis with respect to the home position in 3-D Space i.e( X=0 , Y=0 , Z=0 ) ??
How do i draw them?
To me, it looks like a grid, with 'station marks'. As if the part is located in assembly space, and the grid shows where it is from absolute assembly 0,0,0. ie at a previous race team, we would assemble a full car grid, with every 10" marked with a number in a circle, then chassis parts could be located that way.