(a) (see quot. 1875); (b) a resistance box in which a slide-wire takes the place of a coil.
Π
1875 E. H. KnightPract. Dict. Mech.Slide-box, a slide-valve chest.
1902 Encycl. Brit. XXVI. 501/1 In the rare cases in which it is necessary to employ a long slide-wire..the calibration is best effected by comparison with a standard, such as a Thomson-Varley slide-box.