Graduates of accredited phlebotomy programs are able to practice and seek work immediately, but many employers prefer to hire certified technicians. Technicians are free to seek certification as soon as they meet the minimum requirements, or until five years after graduation. The minimum requirements include at least 40 hours of classroom instruction, 100 hours of clinical training and at least 100 unaided skin punctures and venipunctures.
DritzÂ® offers a wide variety of sewing rulers with special features for taking many different types of measurements. Dressmakerâs ruler: standard issue sewing ruler with parallel slots for precision markings. Use it for measuring buttons, buttonholes, pockets, fabric selvages, bias strips and more. Curve rulers: for long soft curves, French curves, hip curves, necklines, armholes and more. Yardsticks: when sewing and quilting, most commonly used for measuring fabric; theyâre also great for general household use!
How to Use a Metric Ruler. There are two types of scales commonly used on rulers; Fractional and Decimal. Fractional Rulers have graduations or marks based on fractions, for example 1/2, 1/4 1/8, 1/16, etc.. Decimal Rulers have graduations or marks which are based on the decimal system such as 0.1, 0.01, etc. Decimal Rulers can be based on any measuring system but are usually based on either the English measurement system of inches (in) or the Metric measurement system of millimeters (mm), centimeters (cm) and meters (m).