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AS per BS:5204-1975
Camel Back (Bow Shape)
As per IS:5268:69
Straight Edges are made Jrom close grained Cast iron conforming to Grade-20.
Hardness 170-220 BHN.
Castings internal Stresses are relieved either by natural ageing or by artificial seasoning.
Straight Edges are finished by hand scrapping.
Straight Edges have been designed well and ribbed in the best manner to retain thier accuracy under varying conditions and are as light as possible without sacrificing rigidity.
Wooden Cover is provided with each Straight Edge to protect the working surface from rust and dust.
Straight Edges are offered in two grades Grade-I and Grade-II
All finished surfaces of Straight Edges are protected against climatic conditions by a suitable protective coating.