In a Searle's experiment, the diameter of the wire as measured by a screw gauge of least count 0.001 cm is 0.050cm.  The length, measured by a scale of least count 0.1 cm, is 110.0cm.  When a weight of 50 N (measured with no error) is suspended from the wire, the extension is measured to be 0.125 cm by a micrometer of least count 0.001 cm.  Find the maximum error in the measurement of Young's modulus of the material of the wire from these data.