140501, 140509, 140525, 170701, 170725, 261121, 261713 - Hammers, gavels, mallets. Saws, saw blades. Other tools, including files, anvils, bellows. Instruments for linear measurement, including rulers, yard sticks, tape measures and surveyor's tapes and chains. Other measuring instruments and markers, including seismographs, Geiger counters and windsocks. Rectangles that are completely or partially shaded. Letters or words underlined and/or overlined by one or more strokes or lines.