The Dindigul lock is more than just a tool; it is a symbol of timeless artistry and masterful ingenuity. Each lock, meticulously handcrafted, embodies the legacy of skilled craftsmen, merging ancient inspiration with unparalleled precision. These locks are not just strong; they are works of art, telling a story of dedication and tradition.

History
The story of the Dindigul lock begins with the 18th-century ruler of Mysore, Tipu Sultan. To safeguard a fort atop a steep hill in Dindigul, he commissioned the creation of these robust locks. One of the earliest and most magnificent examples of this craftsmanship is still visible on the door of the Dindigul Malai Kottai (Hill Fort), standing strong for over 400 years. The iron-rich region of Dindigul, coupled with a lack of irrigation options, led to the flourishing of the lock-making industry, providing a sustainable livelihood for its people.
The craft was popularized by the Sankaralingachari Brothers, who transformed Dindigul into a hub of lock-making excellence. Their story began when Sankaralinga Asari, a master locksmith, married the daughter of a locksmith from Thoothukudi. He brought the art of lock-making to his drought-stricken hometown, and it thrived, giving rise to a saying: “You can offer your cow to work in an oil mill, but do not get your daughter married to a man from Dindigul.” This reflected the dedication and intensity with which the men of Dindigul pursued their craft.

Making
Creating a Dindigul lock is a meticulous process, beginning with raw materials like iron sheets, brass sheets, key blanks, side plates, and rods. These materials are transformed through molding, welding, and hand assembly, using skills passed down through generations. The smallest lock can take three hours to make, while the largest can take weeks. Each lock is crafted with a unique mechanical code, and if a key is lost, a duplicate can only be made in Dindigul, even for locks that are centuries old.

Types of Locks
Dindigul locks come in over 150 types and designs, showcasing the versatility and creativity of their makers. Popular types include:
• Mango lock
• Door lock
• Trick lock
• Bell lock
• Drawer lock
• Shutter lock
• Partner lock
• Master lock
• Bullet lock
Some specialized locks, like the mango button lock and padlocks with two sets of keys, reveal hidden mechanisms that add an extra layer of security. The bullet lock, with its nine levers and five cylindrical steel rods, is a marvel of precision engineering. Locks designed for bank lockers require a combination of six keys, ensuring maximum security.

Recognition and Struggles
In August 2019, Dindigul locks received the prestigious GI (Geographical Indication) tag, highlighting their unique and authentic craftsmanship. Despite this recognition, the industry faces significant challenges. From around 1,800 locksmiths in the 1980s, only about 200 remain today. Machine-made locks from Aligarh, which are cheaper and lighter, have taken over the market, overshadowing the more durable but expensive Dindigul locks.
Pradeep of ANS Locks believes that the focus should be on encouraging the younger generation to learn this venerable craft. The current locksmiths are aging, and the intricate skills needed to make Dindigul locks must be preserved and passed on. To keep this unique craft and its rich cultural heritage alive, the Tamil Nadu Government must take urgent steps to support and revive the art of Dindigul lock-making, ensuring these timeless locks continue to secure treasures for generations to come.