An echocardiogram can utilize one or more of four special types of echocardiography: 1  M-Mode echocardiography: This is the simplest type of echocardiography. It produces an image that is similar to a line tracing rather than an actual picture of heart structures.
I do have a band saw use it for resawing and cutting curves . Its a item you could do without but once you have one you find you use it more then you think. You do need to have a few different size (width) blades to take full advantage of the tool. herrwood is offline.
The Sawshark's barbels, together with electro-receptors (ampullae of Lorenzini) on the underside of the saw, are used to sense prey buried in the sand. Sawsharks use the saw to uncover and disable the prey, which they then take into their small mouths. Photo Gallery.