Also known asrulerscaleratio scalebhoomi vibhajan scalecentimetre scale
The plot is divided into Brahma, Dev, Manushya and Pishach bhoomi by measuring the line from the centre to every corner and marking 0.333, 0.555 and 0.777 of its length. Joining the matching points gives four bands that follow the real shape of the plot.
Ordinary centimetre scale and a calculator
Whole plot, from its centre to each corner
Once north is marked, a map of any shape is divided into 16 zones of 22.5 degrees by starting 11.25 degrees on either side of the north line. It takes about two minutes on regular and irregular maps alike.
Scale and pencil
Whole map, from its centre
For 32 zoning each pad is 11.25 degrees, with N5 centred on the exact north (0 degrees). Start 5.62 degrees on either side of north and mark every 11.25 degrees, or mark the black lines of the zoning chakra.
Scale and pencil
Whole map, from its centre
Without software, the centre (nabhi) of an irregular plot or flat is found as the centre of gravity of a cut-out of its shape: hang it from two different points, mark the vertical line each time, and the lines cross at the centre.
Scale and pencil
Plan of the plot, house or flat
On a real plot of any shape, the ati marma are marked by finding where the twelve devtas of the six ati marma lines meet the plot boundary and joining those points. With the zoning chakra this takes one to two minutes and needs no computer.
Scale, pencil and eraser
Whole plot or flat, using its boundary
After bhoomi vibhajan the 45 Vastu devtas are marked by angle: the 32 outer devtas at 11.25 degrees each in the Pishach bhoomi, four main inner devtas at 54 degrees and eight others at 18 degrees in the combined Manushya and Dev band, and Brahma in the centre.
Scale, pencil and eraser
Pishach bhoomi for the 32 outer devtas, the combined Manushya and Dev band for the 12 inner devtas, the centre for Brahma
In the 81 pad (9 x 9) Vastu mandala the ati marma are found by drawing six lines between pairs of outer devtas: the two corner diagonals and two lines parallel to each of them. Their nine crossing points are the ati marma.
Scale and pencil
Whole plot; the crossings fall mostly in and around the Brahmasthan
The tilt of a house is read on Google Earth with the ruler tool and then transferred to the paper map as a north line drawn from the centre. On an irregular plot that line is drawn parallel to the wall whose degree was taken.
Google Earth with the ruler tool
Centre of the map
Measure a line from the centre to a corner on the ordinary scale, say 11 cm. Lay the Pishach vithi scale with its zero on the centre and mark where it reads 11, then do the same with the Manushya-Dev and the Brahma vithi scales. The zero must always be on the centre.
No. They are ordinary scales made in the 0.777, 0.555 and 0.333 ratios to save time. With a calculator, multiply the measured length by the ratio, for example 9.1 x 0.777 = 7.07, and mark about 7 cm from the centre on a normal scale.
The 32 devtas of the pishach bhoomi share the full 360 degrees, and 360 divided by 32 is 11.25. Mark North with the plot's actual tilt (for example 5 degrees), place Som devta centred on North with 5.625 degrees on each side, then mark every further 11.25 degrees with a protractor or a zoning chakra and draw those lines only in the outer ring. The 12 inner devtas follow an 18-54-18 degree split in each direction (27 degrees on each side of the direction line for the middle one), and Brahma sits in the centre.