These durable dial scales are more accurate than linear spring scales because of their longer pointers and rotational movement. Scales are easily zeroed and will absorb the impact from sudden load releases. Their rugged construction ensures years of student use. Scales are color-coded. Resolution from 1:80 to 1:200. Series 64126-02 and 64126-03 scales are in Metric/English. Series 60421-01, 60422-01, 60423-01, and 60424-01 scales are in Grams/Newtons.