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+ 24; hole_top = out_row_1 + 12 + 60 + 24; hole_left = slider_center - 13; // this is actually a pushbutton momentary, but roughly same dimensions as toggle switch ON-ON SPDT miniature toggle switch | | | | | | Knobs | | | | | | R1, R2, R23, R24 R3, R21, R27, R28 R4, R6, R7, R30, R31 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8"/> Quad operational amplifier, DIP-14 Ref="U2" pin="6"/> Vertical_space = height - v_margin. New Pull Request