F.1Method of use

IS 1608:2005, Metallic Materials — Tensile Testing at Ambient Temperature

Last Updated 29 Oct 2026

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Carry out the following steps:

a) on the outside scales, select points $a$ and $b$ representing the thickness and the width of the rectangular test piece;
b) join these two points with a line (length of thread or edge of a ruler);
c) read off the corresponding gauge length from the left hand graduation, at the intersection of this line with the central scale.

Example of use

$b=21 \mathrm{~mm} \quad a=15,5 \mathrm{~mm} \quad L_{\mathrm{o}}=102 \mathrm{~mm}$

Notes

1 An error in reading $L_{\mathrm{o}}$ is less than $\pm 1 \%$ means that this nomogram can be used in all cases without further calculation.
2 An error in reading $L_{\mathrm{o}}$ greater than 1 %, means that in some cases the desired accuracy is not obtained; it is then preferable to calculate the product of $a$ and $b$ directly.

IS 1608:2005, Metallic Materials — Tensile Testing at Ambient Temperature

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

Carry out the following steps:

a) on the outside scales, select points $a$ and $b$ representing the thickness and the width of the rectangular test piece;
b) join these two points with a line (length of thread or edge of a ruler);
c) read off the corresponding gauge length from the left hand graduation, at the intersection of this line with the central scale.

$b=21 \mathrm{~mm} \quad a=15,5 \mathrm{~mm} \quad L_{\mathrm{o}}=102 \mathrm{~mm}$

Notes

1 An error in reading $L_{\mathrm{o}}$ is less than $\pm 1 \%$ means that this nomogram can be used in all cases without further calculation.
2 An error in reading $L_{\mathrm{o}}$ greater than 1 %, means that in some cases the desired accuracy is not obtained; it is then preferable to calculate the product of $a$ and $b$ directly.