Inscriptions, especially those of the early medieval period, have been used as a major source of
information on administrative and revenue systems. They can also shed light on the history of settlement
patterns, agrarian relations, forms of labor, and class and caste structures. There are very few ancient
records of secular lands transactions and records of land disputes, but these take us straight to the heart of
social and economic issues. For instance, an inscription of the time of the Cholas king Raja raja III
states the farmers of a certain village found the burden arbitrary levies in money and paddy and the
demand of compulsory labor made on various protests by several agencies so unbearable that they could
no longer carry on cultivation. A meeting of the Brahmana assembly and the leading men of the locality
was held in the village temple. These dates and even the relative chronologies of major cultural
developments are often uncertain or totally unknown, but here again inscriptional materials with its vast
volumes and diversity of contents, frequently comes to the savior.
Till date, the usual or prime materials used for Indian inscriptions are stone surfaces of various types. In
general, softer varieties of fine – grained stones are preferred, frequently used types include sandstone,
basalt, slate, trap, and steatite. Some inscriptions particularly from the earlier periods are inscribed
directly on to rough stones with little or no preparation of the surface. Such is the case, for instance, with
the Asokan rock inscriptions. More commonly, however, the rock surface is subjected to varying degrees
of preparation of involving smoothing and polishing of the area to be inscribed. Later and more elaborate
stone inscription, especially those of the prasastis class, are typically inscribed on rectangular slabs,
sometimes very large, which were previously cut to seize and carefully polished. Long inscriptions,
especially those of literary content could be inscribed on a series of slabs. Stone slabs inscriptions may
also serve devotional purposes , as in the inscribed and sculpted slabs of Buddhists and Jains , or the
inscribed footprint slabs of gods or revered personages .
From the earliest times inscriptions, usually of a dedicatory character, were commonly engraved on the
walls , facades, columns, pillars , pilasters , railings, gates, doorways, and other parts of stone structures
such as excavated stupas, caves, temples, palaces, and well. The cave temples of western India and the
stupas of central India such as Sanchi and Bharut, for example bear hundreds of dedicatory and
explicatory inscriptions. Inscriptions are smaller, portable stone objects are also common, particularly
among the Buddhists. Inscribed stone reliquaries for bodily relics of the Buddha and other venerable are
common in earlier centuries. Copper by far the most common metal used for inscriptions in India is
second only to stone in overall frequency. The great majority of inscriptions on, copper or copper plate
land grant charter, which number in thousands. Though for less common, other types of inscriptions on
copper are also known, especially Buddhist records on such copper objects as dedicatory tablets, relic
caskets, ladles, seals, and bells. Inscriptions on bronze are also fairly common, though much less so than
on copper. The most common types of bronze inscriptions are those on religious images, recording
dedicatory and /or devotional messages on the pedestals bronzes, and on seals .The Sohagpura plaques
though often referred to as “copper”, is actually of bronze and is hence the earliest specimen of an
inscription in that metal
Inscriptions on brass and similar alloys are found most commonly on sculptural images .A few inscribed
Brahmanical brass images of about the eighth century has been found . Occasionally inscriptions are
found on brass objects, such as seal or trident .Inscriptions on iron are rare, the only important specimen
being the inscription of king Candra(Chandragupta II) on the iron pillar of Meharauli. An iron object,
believed to be a trading iron, with the Brahmi letters ( jaya) in reverse was found at Nalanda.