Section 13 in The Goa, Daman and Diu Uniforms and Allowances to The Excise Executive Staff Rules, 1980
13. Whistle: Thunderer with chain to be kept in the breast pocket and the chain to be hooked inside the coat to be ring of the second button from the top. The hook of the chain should be slightly closed as not to slip off the button ring and yet remain attachable to fit.
