#define ruler_width 18
#define ruler_height 18
static char ruler_bits[] = {
  0xFC, 0x00, 0x00, 0xFC, 0x00, 0x00, 0xFF, 0xFF, 0x03, 0xFF, 0xFF, 0x03, 
  0xCF, 0x00, 0x03, 0xCF, 0x00, 0x03, 0xFF, 0xFF, 0x03, 0xFF, 0xFF, 0x03, 
  0xCC, 0x00, 0x00, 0xCC, 0x00, 0x00, 0xCC, 0x00, 0x00, 0xCC, 0x00, 0x00, 
  0xCC, 0x00, 0x00, 0xCC, 0x00, 0x00, 0xCC, 0x00, 0x00, 0xCC, 0x00, 0x00, 
  0xFC, 0x00, 0x00, 0xFC, 0x00, 0x00, };