How are the bhoomi vibhajan ratio scales used?
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.
Related questions
Is it necessary to buy the special scales for bhoomi vibhajan?
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.
Why does each outer devta cover 11.25 degrees, and how are the pads marked?
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.
A regular plot has small strips of land left open at the side and the front. Do we leave them out or zone the complete plot?
Zone the complete plot. Almost the whole plot is in use and even the small strips are being used, so the full plot is taken for zoning and for the degree.
Are the 32 outer devtas drawn in the Manushya bhoomi or in the Pishach bhoomi?
In the Pishach bhoomi, the outermost band. The 32 outer devta lines are drawn only within the Pishach bhoomi, while the 12 inner devtas sit in the combined Manushya and Dev band and Brahma in the centre.
At what degree do the corner directions (vidisha) fall?
North-East, South-East, South-West and North-West fall exactly 45 degrees from the main directions. Where they fall in your own flat becomes clear once you do the zoning.
Can the Google Earth method be done on a phone?
Google Earth with the ruler works only on a laptop or PC. On a phone you can use a photo editing app instead: take the chakra image in PNG form, ask the client for a photo of the map and overlay the chakra on it, which needs some photo editing skill.