A spindle-chuck is shown attached to its two standards or supporters, in Fig. 750. Previous to fastening the standards to the planing-table, the chuck's spindle-ends are connected and tightly gripped by screwing tight the cap-bolts, and while tight, the apparatus can be adjusted to any precise situation, either across the table, or parallel with its length. The foot of each standard should be planed, so that its ends are equi-distant from the centre of the spindle-end when connected, in order to allow the length of the chuck to be accurately adjusted to parallelism with the table's length when required ; this adjustment is then, easily effected by placing the extremity of each foot in line with one of the long lines on the table. When it is requisite to place the length of the chuck at right-angles to the table's length, the feet of the pedestals are adjusted to one of the short lines across the table instead of to one of the long ones. The chuck may also be adjusted by means of a straight line marked on the outer side of each standard, and extending to its bottom, which line passes through the centre of the spindle's-end.

Through the chuck being capable of being fixed at any desired angle, it is a convenient means of planing the surfaces of dove-tail gaps in guides, without the necessity of inclining the slide-rest, the guide being so adjusted that the plane to be produced is in a condition of parallelism with the table, consequently, the ordinary horizontal traverse of the tool will effect the planing. Dove-tail guide-blocks also are easily planed by the same means; also the steel guide-strips, which have plane surfaces inclined at about forty-five degrees with each other. Cylinders also, whose port-faces are inclined at some angle with the lugs, are easily fixed and planed to the angle required, as denoted in the Fig. (750.)