Abstract: A toothing testing apparatus includes at least one pair of measuring disks or balls of a certain diameter which are introducible into respective substantially diametrically opposed tooth spaces of a testpiece, and measuring probes each including a base part and a measuring part elastically secured to the base part and rockable relative thereto, for measuring the distance between the measuring disks or balls of said at least one pair, the measuring part having one of the measuring disks or balls attached thereto and the base part being housed in or against a stationary part of the testing apparatus. The measuring disks or balls are symmetrically positioned and automatically centered in the tooth spaces to be measured, and the depth of penetration of the measuring disks or balls into the tooth spaces is measured by the testing apparatus.

Abstract: A method for detecting faults, or inaccuracies in a test object which is a splined wheel having teeth of substantially similar shape, or in an object having a similarly shaped toothed profile, including rolling the test object against a counter splined wheel of a testing device with similarly formed teeth, which testing device includes a plurality of gauging elements which are introducible into the spaces between the two teeth of the test object, each gauging element having a curved testing cross-section engageable in the spaces between the test object teeth, the radius of the testing cross-section of the gauging elements is selected relative to the structure and shape of the teeth of the test object so that the testing cross-section rests on the test object tooth flanks at points between the top and the base of the tooth, alternately only one of the testing cross-sections, then two of the testing cross-sections, then again only one of the testing cross-sections and so as, is introduced in the spaces between

Abstract: An adapter sleeve, the diameter of which is altered by means of the pressure of a fluid, whereby, as a result of this change in diameter, an object is held by means of the clamping force of the adapter sleeve, characterized in that the adapter sleeve is made of titanium or a titanium alloy and comprises a hard layer on the side which is adapted to clamp the object.

Abstract: A pickup head for measuring and assembling procedures. A central member which is axially blocked on the object, is pivotable about an axial angle through the intermediary of a cam drive constituted of at least one arbor or ball on a housing and an inclined groove on the body, at an axial lift of the hosing against the force of springs, and including a switch which, upon a predetermined axial lift of the central member, will effect a feed and return movement.

Abstract: A gauge for checking the quality (accuracy; tolerance: trueness) of gear teeth is provided with a set of gauging teeth which, when the gauge is used, mesh with the teeth to be checked. This effects automatic alignment of the actual contact pins relative to the teeth to be checked.