Igaging® test indicator holder & set features ul style 'margin-top 0px; padding-top 5px; padding-bottom 5px;' set includes range 0.030 igaging dial test indicator #400-030 centering rod dia 0.375" x 1.55" for milling machines arm length 2" top 1.9" bottom. Universal fi ne adjustment strong locking handle holds indicator with 3/8" stem and dovetail red anodized finish supplied in protective case