row_2 = row_1 + v_margin + 12; //knob_radius top_row = height - v_margin; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_middle = col_left + (15.6 + 1.5 + 7 segment green -1 overflow 7 segment orange LED with left dot Overflow +- 1 orange LED with left dot Overflow +- 1 red LED display 3 1/5 digit reflective LCD LOW-BAT + 7-Segment 4 digit 7 segment green LED, http://www.kingbright.com/attachments/file/psearch/000/00/00/CA56-12SYKWA(Ver.6A).pdf 4 digit 7 segment green One digit 7 segemnt blue LED, right hand decimal 10-Element Bar Graph Array 10-Element Red Yellow Green Bar.