may be readily varied such that the indexing of the table 22 may vary between the distance between adjacent recesses 40 to a maximum of 90 u00b0 as appreciated from fig1 conduits 120 connect the locating detent motor 96 to the control valve 118 and conduit 122 connects fitting 124 to motor 96 fitting 124 communicates with the bore 50 for locking the table against the base as described below the motors 92 and 96 and valve mechanism constitute no part of the invention and may be of a conventional nature as shown in fig2 indicia 126 may be defined upon the base 10 for correlation to an indicator mark formed on the abutment block 102 wherein location of the abutment block will be readily apparent to the operator so that he may determine the degree of table indexing which will be produced each cycle in use assuming the table to be stationary the locating detent 94 will be engaging a recess 40 as shown in fig3 and the detent 84 will also be in engagement with a recess 40 as illustrated since the indexing movement has been completed also the chamber 48 will be pressurized forcing the index wheel 34 piston 34 portion 36 downwardly which draws the table 22 downwardly toward the base to firmly engage the table surface 28 with the base surface 30 with a high frictional force locking.