81, 25, 655 and 656 AGD Dial Indica tors This comparison table is an aid to help you find the indicator with the specific graduations and ranges you are looking for. Refer to the following pages for the exact catalog number and EDP number. Dial Indica tors GROUP 4 3-5/8" 92mm 2-3/4" 70mm GROUP 3 2-1/4" 57mm GROUP 2 GROUP 1 1-11/16" 43mm 81, 25, 655 and 656 AGD Dial Indicators (White Dials Furnished Standard) Graduation Range Dial Reading Group 1 Group 2 Group 3 Group 4 One Rev. Total 81 Indictators 25 Indicators 655 Indicators 656 Indicators .00005" .006" .015" 0-3-0 25-109 656-109 0-6 25-209 656-209 .0001" .006" .015" 0-3-0 25-116 .0001" .008" .020" 0-4-0 25-118 655-118 656-118 0-8 25-218 .0001" .010" .025" 0-5-0 81-111 25-111 655-111 656-111 0-10 81-211 25-211 655-211 656-211 .0001" .010" .025" 0.1 –0.10 81-111-624* –0.10 0.1 81-111-630* .0001" .010" .200" 0-5-0 25-511* 655-511* 656-511* 0-10 25-611* 655-611* 656-611* .0001" .020" .400" 0-10-0 656-517* 0-20 656-617* .00025" .010" .025" 0-5-0 81-124 25-124 655-124 656-124 0-10 81-224 25-224 655-224 656-224 .00025" .020" .050" 0-10-0 81-128 25-128 655-128 656-128 0-20 81-228 25-228 655-228 656-228 .00025" .030" .075" 0-15-0 655-129 656-129 0-30 655-229 656-229 .0005" .020" .050" 0-10-0 81-134 25-134 655-134 656-134 0-20 81-234 25-234 655-234 656-234 .0005" .030" .075" 0-15-0 81-136 25-136 655-136 656-136 0-30 81-236 25-236 655-236 656-236 .0005" .030" .075" 0.3 –0.30 81-136-622* –0.30 0.3 81-136-623* .0005" .040" .100" 0-20-0 81-138 25-138 655-138 656-138 0-40 81-238 25-238 655-238 656-238 .0005" .050" .125" 0-25-0 81-131 25-131 655-131 656-131 0-50 81-231 25-231 655-231 656-231 .0005" .050" .500" 0-50 25-431*† .0005" .050" 1.000" 0-50 25-631*† * With revolution counter on dial † With top lift mechanism AGD Design Specifications: Bezel Diameters Design Size Group Minimum Diameter Maximum Diameter in mm in mm 0 1" 25mm 1-3/8" 35mm AGD 1 1-3/8" 35mm 2" 50mm 2 2" 50mm 2-3/8" 60mm 3 2-3/8" 60mm 3" 75mm 4 3" 76mm 3-3/4" 95mm 148 I ndica tors and G ages