1.00" 20 20 15 15 10 10 5 - 0 + 5 .0005" No. 647 Bore Gage Systems AccuPlug™ Bore Gaging Technical Specifica tions Indica tor Units 8mm and 3/8" 4.953" (126mm) 4.524" (115mm) 4.301" (109mm) M10 5.197" (132mm) M10 7.598" (193mm) M6 4.803" (122mm) M6 7.205" (183mm) 8mm 8mm 8mm 8mm 8mm 3/8" 3/8" 3/8" 3/8" 3/8" 197" (5mm) 2900-4 and 2900-4M M6 AccuPlug 100mm Extension - M6 and M10 Short holder M6 and M10 with 3/8" or 8mm stem Long holder M6 and M10 with 3/8" or 8mm stem M10 AccuPlug M6 to M10 Adapter F2720AD and F2720ADM 647 and 647M Mini indicator with shroud, short handle - M6 and M10 Mini indicator with shroud, long handle - M6 and M10 AccuPlugs .500" PLUG DIA. PLUG Ø "A" "A" "C" "C" M6 and M10 3.937" (100mm) M6 1.929" (49mm) M6 4.331" (110mm) M10 4.724" (120mm) M10 2.323" (59mm) "D" "D" M10 x 1 M6 x 0.75 "E" "E" "B" "B" Accessories AccuPlug Dimension Specifications Plug Diameter "A" Range B C D E in mm in mm in mm in mm in mm 0.2362-0.7874 6-20 .006 0.15 .138 3.5 1.063 27 1.378 35 M6 x 0.75 0.5906-1.7717 15-45 .008 0.20 .177 4.5 1.102 28 1.713 43.5 M10 x 1 1.7717- 2.756 45-70 .008 0.20 .217 5.5 1.102 28 1.732 44 M10 x 1 2.756-11.0236 70-280 .008 0.20 .217" 5.5 1.378 35 1.732 44 M10 x 1 Mini Indica tor Units 219 starrett.com B ore G ages