survey measuring chain
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Measuring Chain consisting of a fixed number of straight links of galvanized mild steel wire 4mm in diameter. The end of each link are bent into a loop and connected together by means of three circular shape rings. The joints of the rings made be open or welded preferably welded. The ends of the chain are provided with brass handles. The handle is linked with a swivel joint to the chain. The length of each linked is 200 mm. each meter is provided with circular brass ring & each five meter length is provided wit brass talltes of requisite shapes each chain should be provided with 10 nos of M.S.Arrows of 4 mm diameter bar and 40 cm. Height. Refer : IS 1492-1970 i) 20 meter chain ii) 30 meter chain
survey chains
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survey chains, Prism Holder, Digital protractor
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