Counterbore. A counterbored hole is typically used when a fastener such as a bolt or cap head screw is required to sit flush with or below the level of a surface. To fabricate your counterbored holes, we would need to know the following information.1  Major Diameter (finished diameter of the hole at the surface).ountersink. A countersink is a cone shaped hole cut into the laminate. It is typically used to allow the tapered head of a screw to sit flush with the top of the laminate. By comparison, a counterbore makes a flat-bottomed hole and its sides are drilled straight down.
The cost of tuition for an EKG technician program can range anywhere from a little over $400 to more than $1,000. At Carroll Community College, for example, the 60-hour EKG technician training program costs $629 and does not yet include books. Meanwhile, California State University has an EKG technician certification program which has a tuition cost of $1,099. This already includes the course textbook. At the Tennessee College of Applied Technology in Knoxville, the cost of their EKG technician program is $478.
To recap, with a high school diploma, on-the-job training or possibly a training program, an EKG technician can earn about $31,000 a year to perform diagnostic tests to aid doctors in identifying and treating cardiovascular problems in patients.