Abstract: A coating thickness measuring instrument comprising: a magnetic induction probe comprising at least one drive coil and at least one pick-up coil; a driver for driving an alternating current in the or each drive coil; and a detector for detecting the output of the or each pick-up coil; and a processor configured to: apply a transfer function to the detector output to produce an output which corresponds to a measured coating thickness; and, scale both the drive current and detector output simultaneously in response to the output. The scaling may be changed in a step-wise manner. The scaling applied to the drive current may be inversely proportional to the scaling applied to the detector output. The scaling may be defined by a first and second scaling factor, stored as a pair. The instrument may store two or more pairs of scaling factors and select a pair in response to the measured coating thickness.

Abstract: The present invention is related to a DNA sequence of outer membrane proteins of Actinobacillus pleuropneumoniae expressed in a subject suffering from pleuropneumonia, the sequence coding for the receptor for the uptake of ferric hydroxamate FhuA as set forth in SEQ ID NO: 1 in Actinobacillus pleuropneumoniae, or any functional fragment thereof. The present invention also relates to a DNA sequence of outer membrane proteins of Actinobacillus pleuropneumoniae expressed in a subject suffering from pleuropneumonia, the sequence coding for a hemoglobin-binding protein as set forth in SEQ ID NO: 4 in Actinobacillus pleuropneumoniae, or any functional fragment thereof. The present invention further relates to composition, diagnostic kit and methods using the DNA sequences of the present invention.