The culmination of your educational preparation is the five-hour exam administered by the ARRT to become a registered radiology assistant. Ace this and youâre ready to be the right hand man of the radiologist, working in a hospital, private clinic and other medical facilities.
The international inch is defined to be equal to 25.4 millimeters. âºâº Definition: Centimeter A centimetre (American spelling centimeter, symbol cm) is a unit of length that is equal to one hundreth of a metre, the current SI base unit of length.
1 inch = 25.4 mm 1 mm = 0.0394 in so 18 mm = 18 X 0.0394 in = 0.71 of an inch (just over 7 tenths of an inch) And since decimal inch rulers aren't readily available, you'll h â¦ ave to convert to fractional 16ths: Multiply 0.71 x 16 to get the number of 16ths inch.irst convert 1.8 mm to inches. Since there are 25.4 mm in 1 inch, divide by 25.4: 1.8 / 2.54 = 0.070866 inches (although that's probably more significant figures than are w â¦ arranted).