IS 3602 : 1966 Recommendations for the design of scales and indexes for indicating instruments for scales of 1 to 2 percent resolution

1 Scope

1.1 This standard lays down recommendations for design of scalesand associated indexes for quantitative instruments to enable rapidreading to a resolution of about 1 to 2 percent of the scale rangewhen read from a given maximum distance. These recommendations areapplicable only to single scale instruments having dials with fullcircle, part circle or straight scales. These recommendations arenot applicable to trans-illuminated dials nor to moving-scale withfixed index in instruments.