2308x2400pxsimple black and white border, monochrome decorative frame, technical drawing borders, black and white line art, geometric shape outline, minimalist design element, abstract border pattern
773x758pxruler and protractor illustration, black and white stationery tools, monochrome drawing aids, technical drafting equipment, geometric measurement tools, precision measuring devices, educational drafting set
540x540pxAutoCAD Computer Icons, AutoCAD DXF, black and white computer symbols, AutoCAD Civil 3D design, geometric CAD elements, technical drawing tools, monochrome software graphics
512x512pxblack circle sprinkler head, sobel operator design, black and white thumbnail, education science illustration, irrigation equipment, circular water distribution, monochrome technical drawing
500x500pxdiesel engine technical drawing, monochrome engine blueprint, cross section auto part illustration, Yaroslavl Motor Plant engine schematic, mechanical line art, industrial machinery diagram, engine component design
