EQUATORIAL SUNDIAL BY MANGARAN OF PATNA, 1275 AH / 1859 AD.
It is a rectangular brass sheet which has been bent to form a
semi-circular trough. There is a gnomon on one side of the trough
which throws its shadow on the scales engraved inside the trough.
Upon the scales, one can measure the time both 60-minutes hours and
in 24–minute ghatis. The trough is mounted on a stand at the
back of which there is an arc which is graduated in degrees from 10
to 50. By sliding the trough along the arc up to the desired degree,
the sundial can be adjusted according to the local altitude. The
instrument must be placed always in a north-south axis. For this
purpose, a magnetic compass is attached to the lower part of the
Interestingly enough, the legends on
the instrument represent all the three scientific traditions
prevalent in the nineteenth century. The scales are marked with the
Arabic or English numerals. On one side of the trough, the Sanskrit
names of the twelve zodiac signs are written in Devanagari
script. Finally, the maker’s inscription within the trough is in
Persian language and script. The inscription records that this
instrument was manufactured at Patna in 1275 AH/AD 1859 by Mangaran
who was a Shagird-i Rashid of Lalah Makhan Lal.
the Victoria and Albert Museum of London, there is another sun-dial
made by Mangaran in 1284 AH/AD 1868. These two were clearly copied
from a European model which was probably designed in France.