SEPTA cab signal display for the 4-aspect PRR system using position light aspects. Pulse code cab signaling is a form of cab signaling technology developed in the United States by the Union Switch and Signal corporation for the Pennsylvania Railroad in the 1920s.
Measuring your Saddle Seat Size. The easiest way to measure for the appropriate seat size is to measure your upper thigh. Sit in a chair with your feet flat on the ground so that your knees are bent at a 45-degree angle. Be sure your buttocks are touching the back of the chair. Take a measuring tape and run it along your thigh bone, measuring from the end of your knee to the backside of your buttocks.
Veterinarians and farriers often carry a tool that looks like a long-handled pincer with flat or rounded tips. This is a hoof tester, a device that can be used to apply gentle pressure to any spot on the horseâs sole, toe, or heel area. For a horse thatâs just a little bit âoffâ in its stride, the hoof tester will usually help in locating the source of the pain. A horse thatâs âthree-legged lameâ from a suspected hoof abscess will flinch when the hoof tester is applied over the infected spot. If a shoeing nail has been driven into sensitive tissue, the hoof tester can help to identify the bad nail, and there are plenty of other ways to use the device in diagnosing hoof pain.