Patent ID: 7516559

Claim:
A device ( 100 ) for the checking and measurement of the journal bearing clearance ( 50 ) between the outer bearing ( 31 ) on the rudder shaft ( 25 ) of a rudder for water-borne craft and the inner bearing ( 32 ) on the rudder trunk ( 20 ) corresponding with the outer bearing ( 31 ), comprising a measurement rail ( 70 ) made of a springy elastic material having internal stiffness, which can be introduced by means of a guide rail ( 60 ), provided with a grip-type handle ( 61 ), into the gap ( 35 ) between the outer bearing ( 31 ) and the inner bearing ( 32 ) and hence into the clearance measurement region ( 40 ), with a measurement probe ( 80 ) located at its free end ( 70 a ) for the clearance width measurement, wherein the measurement rail ( 70 ) with the measurement probe ( 80 ) with a prescribed thickness (a) are exchanged for measurement rails with measurement probes with other thicknesses until an agreement of the clearance width with the thickness of a measurement rail ( 70 ) with the measurement probe ( 80 ) is attained.