The slide control taper modernizes equipment with use of slide controls that have rugged construction and extra smooth action. 20% tolerance and solderable terminals. 4-7/16" mounting centers, 4-11/16 x 1/2 x 5/8" including terminals for 25-271/25-275/25-276/25-277 models. 3-5/32" mounting centers, 3-7/16 x 1/2 x 5/16" including terminals for 25-372/25-379 models. Dual gang slide 2-11/16" mounting centers, 2-7/8 x 3/4 x 7/32" PC leads for 25-390 model.