A coronary angiogram (an X-ray with radiocontrast in the coronary arteries) that shows the left coronary circulation. The distal left main coronary artery (LMCA) is in the left upper quadrant of the image.
U-Boat Watches - Back in 1942 the Officine Fontana was poised to produce a professional watch for the distinguished officers of its navys U-Boats. Though the project was ultimately scrapped, the distinctive original drawings, color samples and innovative materials were lovingly preserved for more than 60 years.
The term U-Boot actually simply means submarine.. Generally it is thought that the submarine was invented by Cornelius Drebbel in the 1500s, or by John Holland in the 1800s. The Walther U-Boot was invented by Helmut Walther. U-boat is the English translation of unterseaboot or under sea boat, shortened to U-boat.