A metallic strain-gauge $(\mathrm{SG})$ with resistance $R_{\mathrm{SG}}$ is connected as shown in the figure, where $R_{\mathrm{L} 1}, R_{\mathrm{L} 2}, R_{\mathrm{L} 3}$ represent the lead wire resistances. The $\mathrm{SG}$ has a gauge factor of $2$ and nominal resistance $R_{\mathrm{N}}$ of $125 \: \Omega$. When the $\mathrm{SG}$ is subjected to a tensile strain of $2 \times 10^{-3}$, the resulting change in $R_{\mathrm{SG}}$ is $\Delta R$. The $\Delta R$ value is measured as $\Delta R_{\mathrm{MEAS}}=R_{\mathrm{EQ} 2}-R_{\mathrm{EQ} 1}$. The $R_{\mathrm{EQ} 1}$ and $R_{\mathrm{EQ} 2}$ are the equivalent resistances measured between the terminals $1$ and $2$, and terminals $2$ and $3$, respectively.
If $R_{\mathrm{L} 1}=R_{\mathrm{L} 2}=5 \: \Omega$, and $R_{\mathrm{L} 3}=4.95 \: \Omega$, the measured value of tensile strain is ____________ $\times 10^{-3}$ (rounded off to two decimal places).
