650, 651 Back-Plunger Dial Indica tors .200" These workhorse back plunger indicators feature AGD (American Gage Design) stem holding fixtures and the great variety of AGD  contact points. These very versatile indicators have the following features: • 650 Indicators have a 3" (75mm) deep hole attachment that connects directly with the main spindle for positive action.Attachment is convenient to use when checking internal dimensions of a workpiece.When not needed, the attachment can be easily removed and the hole capped. • 651 Indicators are identical to the 650 indicators except they cannot accept the deep hole attachment • Both models have large 1-11/16" (43mm) diameter bezels with easy-to-read dial numbers and graduations • Smooth and accurate operation due to their sturdy, basic design • Hardened, stainless steel AGD stem .375" (9.5mm) diameter • Shank dimension 1/4" (6.3mm) diameter, 3-3/16" (80mm) long • With their .375" (9.5mm) AGD stem diameter, the 650 and 651 can be used with our 670 Hole Attachment and our 671 Universal Attachment • Adjustable dials to set zero at any point opposite the hand • Inch reading dials have white faces and millimeter reading dials are yellow • Three different styles of contact points are furnished with each indicator 650B5 651B1 Back Plunger Indica tors 650, 651 Back Plunger Dial Indicators With Deep Hole Attachment Without Deep Hole Attachment Grad. Range Dial Reading Description Cat. No. EDP Cat. No. EDP 650A1Z 64475 651A1Z 64483 .001" .200" 0-100 Indicator with 3 contact points,3 attachments*,in case 650B1 64477 651B1 64485 Indicator with 3 contact points only 650A5Z 64474 651A5Z 64484 .001" .200" 0-50-0 Indicator with 3 contact points,3 attachments*,in case 650B5 64476 651B5 64486 Indicator with 3 contact points only 650, 651 Back Plunger Dial Indicators With Deep Hole Attachment Without Deep Hole Attachment Grad. Range Dial Reading Description Cat. No. EDP Cat. No. EDP 650MA1Z 65261 651MA1Z 65263 5mm 0.01mm 0-100 Indicator with 3 contact points,3 attachments*,in case 650MB1 65262 651MB1 65264 Yellow Dial Face Indicator with 3 contact points only * Attachments include clamp, tool post holder and snug (PT18718). Individual Contact Points Only Photo Part No. EDP PT01761 75263 PT06632-5 70793 PT06632-6 70794 141 starrett.com I ndica tors and G ages