Chicago Dial Indicator - mechanical and electronic gages
American made precision measuring products since 1932


Mechanical Indicators - Replacement Parts

Parts common to all Group 1 Indicators
Parts not common to all Group 1 Indicators
Parts common to all Group 2 Indicators
Parts not common to all Group 2 Indicators
Special Parts for Group 2 Indicators
Parts common for Group 3 Indicators
Parts Not Common to all Group 3-4 indicators
Parts Common for Group 4 indicators
Parts Common to all Extra Long Range Group Sizes 2,3, & 4 indicators
Parts for Group 2(2-1/4"IDA.) 2"Range
Parts for Group 3(2-3/4"DIA.) 2"-3"-4"-5"Range
Parts for Group 4(3-5/8"DIA.) 2"-3"-4"-5"Range
Parts for Models 60100B1 (B-50/0-50-0) 60100C1 (c100/1-100)

Parts common to all Group 1 indicators:

DESCRIPTION EDP# PRICE
ASSY, PINION BRIDGE W/JEWEL A22530-12 $20.25
ASSY, PINION BRIDGE A22530 $10.46
ASSY, BEZEL W/CRYSTAL A125717 $16.79
BEZEL A12573 $13.56
CASE A125145 $35.00
CRYSTAL A12517 $4.15
ASSY, TAKE UP GEAR A12523 $19.72
HAND A12525 $4.15
O RING A12562 $8.05
PIN, RACK GUIDE A12533 $3.89
SCREW, MOVEMENT A12548H $2.46
SCREW, BRIDGE A12551A $4.19
SLIDE, RACK A12552 $5.37
SPRING, FLAT DIAL A12553 $4.15
SPRING, GEAR RETURN A12555 $6.63
SPRING, RACK RETURN A12556 $4.15
WASHER, PINION GEAR A22534W $3.86
WASHER, BEZEL LOCK A225601 $5.37
SCREW, BEZEL LOCK A22561 $6.94
DIAL, BOTTOM SPEC. MODEL $8.18
DIAL, TOP SPEC. MODEL $8.18




Parts not common to all Group 1 indicators:

  Range .250" Range .125"
DESCRIPTION EDP# PRICE EDP# PRICE
ASSY, INTERMEDIATE GEAR N/A   A11220 $22.98
ASSY, RACK GEAR A12521 $22.98 A11221 $22.98
ASSY, MOVEMENT/JEWELED A23106 $101.03 A23108 $109.67
ASSY, MOVEMENT/PLAIN A23006 $69.01 A23008 $77.28
GEAR, PINION A12534 $15.01 A12534 $15.01
ASSY, JEWELED BOTTOM PLATE A23506 $44.36 A23508 $51.00
ASSY, PLAIN BOTTOM PLATE A23506 $24.65 A23608 $30.01
ASSY, JEWELED TOP PLATE A23706 $34.49 A23708 $39.98
ASSY, PLAIN TOP PLATE A23806 $14.79 A23808 $22.98
RACK A14325 $20.71 A14312 $20.71


  Range .100" Range .075"
DESCRIPTION EDP# PRICE EDP# PRICE
ASSY, INTERMEDIATE GEAR A11020 $22.98 A11020 $22.98
ASSY, RACK GEAR A11221 $22.98 A10521 $24.65
ASSY, MOVEMENT/JEWELED A23109 $109.67 A23111 $109.67
ASSY, MOVEMENT/PLAIN A23009 $77.28 A23011 $77.28
GEAR, PINION A12534 $15.01 A10734 $17.02
ASSY, JEWELED BOTTOM PLATE A23509 $51.00 A23511 $51.00
ASSY, PLAIN BOTTOM PLATE A23609 $30.01 A23611 $30.01
ASSY, JEWELED TOP PLATE A23709 $39.88 A23711 $39.88
ASSY, PLAIN TOP PLATE A23809 $22.98 A23811 $22.99
RACK A14310 $20.71 A14307 $20.71


  Range .025" Range .050"
DESCRIPTION EDP# PRICE EDP# PRICE
ASSY, INTERMEDIATE GEAR A10220 $45.14 A10520 $24.65
ASSY, RACK GEAR A10521 $24.65 A10521 $24.65
ASSY, MOVEMENT/JEWELED A23114 $137.00 A23113 $118.95
ASSY, MOVEMENT/PLAIN A23014 $105.19 A23013 $86.92
GEAR, PINION A10734 $17.02 A10734 $17.02
ASSY, JEWELED BOTTOM PLATE A23514 $59.37 A23513 $54.21
ASSY, PLAIN BOTTOM PLATE A23614 $39.88 A23613 $34.49
ASSY, JEWELED TOP PLATE A23714 $51.31 A23713 $45.37
ASSY, PLAIN TOP PLATE A23814 $30.07 A23813 $24.65
RACK A14302 $28.09 A14305 $25.77




Parts common to all Group 2 indicators:

DESCRIPTION EDP# PRICE
ASSY, PINION BRIDGE W/JEWEL A22530-12 $20.25
ASSY, PINION BRIDGE A22530 $10.46
BEZEL A22573 $13.56
BEZEL W/CRYSTAL A225717 $17.70
BEZEL LOCK SCREW A22561 $6.94
Bushing, STEM A22510 $4.14
CASE A225145TR.72S $39.77
CRYSTAL 212517 $4.15
ASSY, TAKE UP GEAR A22523 $19.72
HAND A22525 $4.68
HAND, R.C. A22526 $4.14
INSERT, JEWEL LARGE A22527 $11.11
INSERT, JEWEL SMALL A22528 $10.31
O RING, TEFLON BEZEL A22562 $8.05
PIN, HAIRSPRING A22532 $6.63
PIN, RACK GUIDE A22533 $4.14
PINION, 10 TOOTH A22534 $20.25
SCREW, BACK A22544 $2.69
SCREW, RACK STOP A22547 $1.68
SCREW, MOVEMENT A22548 $2.69
SCREW, RACK SLIDE A22550 $2.90
SCREW, BRIDGE A22551 $2.69
SLIDE, RACK A2100052 $5.37
SPRING, DIAL A22553 $4.43
SPRING, GEAR RETURN A22555 $6.40
SPRING, RACK RETURN A22556 $4.14
STUD, RACK SPRING A22557 $4.14
WASHER, PINION GEAR A22534W $3.86
WASHER, BEZEL LOCK A225601 $5.37
DIAL, BOTTOM SPEC. MODEL $9.64
DIAL, TOP SPEC. MODEL $9.64




Parts not common to all Group 2 indicators:

  Range .250" Range .500"
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A225131 $6.41 A250131 $7.16
ASSY, INTERMEDIATE GEAR        
ASSY, RACK GEAR A22521 $22.62    
ASSY, RACK GEAR W/R.C.     A22522 $27.90
HAND, R.C.     A22526 $4.14
ASSY, MOVEMENT/JEWELED A23125 $93.19 A2311.0 $99.36
ASSY, MOVEMENT/PLAIN A23025 $69.01 A2301.0 $87.04
ASSY, JEWELED BOTTOM PLATE A23503 $55.45 A23503 $55.45
ASSY, PLAIN BOTTOM PLATE A23625 $32.68 A23625 $32.68
ASSY, JEWELED TOP PLATE A23725 $41.79 A23503 $41.79
ASSY, PLAIN TOP PLATE A23825 $19.19 A23825 $19.19
RACK A243254 $20.71 A24350 $36.13


  Range 1.00" Range .125"
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A21.0131 $7.16 A225131 $6.41
ASSY, INTERMEDIATE GEAR     A21220 $22.62
ASSY, RACK GEAR     A21221 $22.62
ASSY, RACK GEAR W/R.C. A22522 $27.90    
HAND, R.C. A22526 $4.14    
ASSY, MOVEMENT/JEWELED A2311.0 $99.36 A23112 $93.19
ASSY, MOVEMENT/PLAIN A2301.0 $87.04 A23012 $80.88
ASSY, JEWELED BOTTOM PLATE A23503 $55.45 A23512 $55.45
ASSY, PLAIN BOTTOM PLATE A23625 $32.68 A23612 $30.58
ASSY, JEWELED TOP PLATE A23725 $41.79 A23712 $44.80
ASSY, PLAIN TOP PLATE A23825 $19.12 A23812 $20.72
RACK A2431.0 $35.00 A24312 $20.72


  Range .100" Range .075"
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A225131 $6.41 A225131 $6.41
ASSY, INTERMEDIATE GEAR A21020 $22.62 A21020 $22.62
ASSY, RACK GEAR A21221 $22.62 A21221 $22.62
ASSY, MOVEMENT, JEWELED A23110 $93.19 A23107 $93.19
ASSY, MOVEMENT, PLAIN A23010 $80.88 A23007 $80.88
ASSY, JEWELED BOTTOM PLATE A23510 $55.45 A23507 $55.45
ASSY, PLAIN BOTTOM PLATE A23610 $30.58 A23607 $30.58
ASSY, JEWELED TOP PLATE A23710 $44.80 A23707 $44.80
ASSY, PLAIN TOP PLATE A23810 $20.72 A23807 $20.72
RACK A24310 $20.72 A24307 $20.72


  Range .050" Range .025"
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A225131 $6.41 A225131 $6.41
ASSY, INTERMEDIATE GEAR A20520 $31.25 A20520 $31.25
ASSY, RACK GEAR A21221 $22.62 A20221 $42.34
ASSY, RACK GEAR w/R.C.        
ASSY, TAKE UP GEAR W/R.C.        
HAND, R.C.        
ASSY, MOVEMENT, JEWELED A23105 $135.31 A23102 $172.29
ASSY, MOVEMENT, PLAIN A23005 $123.00 A23002 $159.93
ASSY, JEWELED BOTTOM PLATE A23505 $60.38 A23502 $60.38
ASSY, PLAIN BOTTOM PLATE A23605 $35.29 A23625 $35.29
ASSY, JEWELED TOP PLATE A23705 $50.53 A23702 $50.53
ASSY, PLAIN TOP PLATE A23805 $20.72 A23825 $20.72
RACK A24305 $26.73 A24302 $36.13


  Range .020" Range .200"
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A225131 $6.41 A225131 $6.41
ASSY, INTERMEDIATE GEAR A202020 $31.25 A20520 $31.25
ASSY, RACK GEAR A20221 $42.34    
ASSY, RACK GEAR W/R.C.     A22022 $47.26
ASSY, TAKE UP GEAR W/R.C.     A22024 $46.05
HAND, R.C.     A22526 $4.14
ASSY, MOVEMENT, JEWELED A23102 $172.29 A23120 $172.29
ASSY, MOVEMENT, PLAIN A23002 $159.93 A23020 $159.93
ASSY, JEWELED BOTTOM PLATE A23502 $60.38 A23502 $60.38
ASSY, PLAIN BOTTOM PLATE A23604 $35.29 A23625 $35.29
ASSY, JEWELED TOP PLATE A23702 $50.53 A23702 $50.53
ASSY, PLAIN TOP PLATE A23804 $20.72 A23825 $20.72
RACK A24302 $36.13 A24320 $36.13




Special Parts for Group 2 indicators:

  Model 26105C Model 26103C
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A21.0131 $7.16 A21.0131 $7.16
ASSY, RACK GEAR A21.0021 $34.05    
ASSY, RACK GEAR W/R.C.     A25022 $22.98
ASSY, TAKE UP GEAR A2100231 $27.90 A25023 $19.72
PINION A210034 $20.25 A22534 $20.25
RACK A2431001 $39.21 A2431.0 $35.00


  Model 25005C Model 25003C
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A250131 $7.16 A250131 $7.16
ASSY, RACK GEAR A225021 $34.05    
ASSY, RACK GEAR W/R.C.     A25022 $22.98
ASSY, TAKE UP GEAR A2100231 $27.90 A25023 $19.72
PINION A210034 $20.25 A22534 $20.25
RACK A2435001 $61.47 A24350 $36.13


  Model 22506C
DESCRIPTION EDP# PRICE
CAP, DUST A225131 $6.41
ASSY, RACK GEAR A225021 $34.05
ASSY, RACK GEAR W/R.C.    
ASSY, TAKE UP GEAR A2100231 $27.90
PINION A210034 $20.25
RACK A2435001 $61.47




Parts Common for Group 3 indicators:

DESCRIPTION EDP# PRICE
BEZEL SCREWS A22545 $2.68
BEZEL A232573 $17.02
ASSY, BEZEL W/CRYSTAL A325717 $22.98
CASE A325145 $48.54
Crystal A132517 $5.95
HAND A32525 $5.95
SPRING, FLAT DIAL A232553 $4.64
WASHER, PINION GEAR A22534W $3.86
SCREW, BACK A22544 $2.68
SCREW, BEZEL LOCK A222561 $6.94
WASHER, BEZEL LOCK A225601 $5.37
DIAL, BOTTOM SPEC MODEL $11.76
DIAL, TOP SPEC MODEL $11.76


  RANGE .250" RANGE 1.0"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A34325 $21.21 A3431.0 $36.13


  RANGE .125" RANGE .100"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A34312 $21.21 A34310 $21.21


  RANGE .075" RANGE .050"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A34307 $21.21 A34305 $27.35


  RANGE .025" RANGE .020"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A34302 $38.63 A34302 $38.63


  RANGE .200" RANGE .500"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A34320 $55.19 A34350 $61.38
TAKE UP GEAR & HAIR SPRING     A22024 $46.05
HAND SPRING ONLY     A250055 $10.08


Parts Not Common to all Group 3-4 indicators:

  Model 36105C Model 36103C
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A21.0131 $7.16 A21.0131 $7.16
ASSY, RACK GEAR A210021 $34.05    
ASSY, RACK GEAR W/R.C.     A25022 $22.98
ASSY, TAKE UP GEAR A2100231 $27.90 A25023 $19.72
PINION A210034 $20.25 A22534 $20.25
RACK A3431.01 $48.07 A3431.0 $36.13


  Model 35004C Model 35005C
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A250131 $7.16 A250131 $7.16
ASSY, RACK GEAR     A225021 $34.05
ASSY, RACK GEAR W/R.C. A22522 $27.90    
ASSY, TAKE UP GEAR A22523 $19.72 A2100231 $27.90
PINION A22534 $20.25 A210034 $20.25
RACK A34350 $61.38 A234350-2 $61.47


  Model 35003C Model 35006C
DESCRIPTION EDP# PRICE EDP# PRICE
CAP, DUST A250131 $7.16 A225131 $6.41
ASSY, RACK GEAR A25022 22.98 A225021 $34.05
ASSY, RACK GEAR W/R.C.        
ASSY, TAKE UP GEAR A25023 $19.72 A2100231 $27.90
PINION A22534 $20.25 A225034 $20.25
RACK A24350 $36.13 A3432501 $21.21


  Model 44001C
DESCRIPTION EDP# PRICE
ASSY, RACK GEAR A44022 $50.30
ASSY, TAKE UP GEAR W/R.C. A44023 $42.34
HAND A44025 $7.38
HAND,R.C. A44026 $5.37
PINION A44034 $19.05
RACK A44340 $57.95
SPRING, FLAT DIAL A44053 $6.63
SPRING, RETURN A44055 $8.18


Parts Common for Group 4 indicators:

DESCRIPTION EDP# PRICE
BEZEL A42576 $20.95
BEZEL SCREWS A22545 $2.68
BEZEL & CRYSTAL ASSEMBLY A425717 $29.13
CAP. DUST (.400 RANGE & LESS) A42513 $5.37
CAP. DUST (1.00 RANGE ONLY) A41.0131 $8.18
CASE A425145 $54.69
CRYSTAL A42517 $8.18
HAND A42525 $6.94
SPRING, FLAT DIAL A42553 $6.16
WASHER, PINION GEAR A22534W $3.86
SCREW, BACK A22544 $2.68
SCREW, BEZEL LOCK A22561 $6.94
WASHER, BEZEL LOCK A225601 $5.37
DIAL, BOTTOM SPEC MODEL $11.76
DIAL, TOP SPEC MODEL $11.76


  RANGE .250" RANGE 1.0"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A44325 $22.08 A4431.0 $38.13


  RANGE .125" RANGE .100"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A44312 $22.08 A4431.0 $38.13


  RANGE .075" RANGE .050"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A44307 $22.08 A44305 $23.44


  RANGE .025" RANGE .020"
DESCRIPTION EDP# PRICE EDP# PRICE
RACK A44302 $40.53 A34302 $38.63


  RANGE .200"
DESCRIPTION EDP# PRICE
RACK A44320 $56.33


Parts Common to all Extra Long Range Group Sizes 2,3, & 4 indicators:

DESCRIPTION EDP# PRICE
ASSY, INTERMEDIATE GEAR A20520 $31.25
ASSY, RACK GEAR W/R.C. AL22.022 $34.05
ASSY, TAKE UP GEAR W/R.C. AL22.024 $16.24
ASSY, MOVEMENT, JEWELED A23117 $164.10
ASSY, JEWELED BOTTOM PLATE A23517 $59.59
ASSY, JEWELED TOP PLATE A23725 $45.13
SCREW, RACK SLIDE A22550 $2.90
SCREW, RACK GUIDE AL22.052 $10.88
SPRING, COIL TAKE UP AL22.055 $7.38
SPRING, RACK AL22.056 $5.60
WASHER, PINION GEAR A22534W $3.86


Parts for Group 2(2-1/4"IDA.) 2"Range:

DESCRIPTION EDP# PRICE
CAP, DUST AL22.013 $25.87
CASE A22514TR-2 $61.60
RACK AL2432.0 $91.97
SCREW, RACK STOP AL22.047 $7.17


Parts for Group 3(2-3/4"DIA.) 2"-3"-4"-5"Range:

DESCRIPTION EDP# PRICE
CAP, DUST 2" AL22.013 $25.87
CAP, DUST 3" AL33.013 $31.25
CAP, DUST 4" AL34.013 $41.12
CAP, DUST 5" AL35.013 $51.31
CASE, 2" A32514TR-2 $86.06
CASE, 3" A32514TR-3 $109.27
CASE, 4" A32514TR-4 $132.25
CASE, 5" A32514TR-5 $154.29
RACK 2" AL3432.0 $91.97
RACK 3" AL3433.0 $144.54
RACK 4" AL3434.0 $149.97
RACK 5" AL3435.0 $193.94
SCREW, RACK STOP 2" AL32.047 $7.17
SCREW, RACK STOP 3" AL33.047 $7.38
SCREW, RACK STOP 4" AL34.047 $7.37
SCREW, RACK STOP 5" AL35.047 $8.18


Parts for Group 4(3-5/8"DIA.) 2"-3"-4"-5"Range:

DESCRIPTION EDP# PRICE
CAP, DUST 2" AL42.013 $31.25
CAP, DUST 3" AL43.013 $35.73
CAP, DUST 4" AL44.013 $46.05
CAP, DUST 5" AL45.013 $56.67
CASE, 2" A42514TR-2 $101.87
CASE, 3" AL42514TR-3 $123.69
CASE, 4" AL42514TR-4 $145.76
CASE, 5" A42514TR-5 $167.49
RACK 2" AL4432.0 $103.26
RACK 3" AL4433.0 $126.45
RACK 4" AL4434.0 $58.69
RACK 5" AL4435.0 $205.86


Parts for Models 60100B1 (B-50/0-50-0) 60100C1 (c100/1-100):

DESCRIPTION EDP# PRICE
DIAL 1-100 D60100C $9.18
DIAL 0-50-0 D60100B $9.18
BRIDGE SCREW SHORT A12551A $4.19
HAIR SPRING PIN A22532 $6.63
DIAL SPRING AO3113 $4.13
SPRING, BACK PLUNGER RETURN AO3115 $3.86
SPIRAL A03569-DI $19.05
INDICATOR CASE A03570-60 $44.25
BRIDGE A03572 $103.26
SPINDLE A03572 $16.57
RETAINING RING, SNAP A03574 $4.68
GUIDE PIN A03575-DI $4.68
ECCENTRIC GUIDE A03576 $9.18
CROSS ARM PIN AA03578-1 $3.93
BEZEL FINISHED A03590 $13.40
INDICATOR ROD/HANDLE PIN A03591 $20.14
HAND A03592 $4.37
ECCENTRIC GUIDE SCREW AA03604 $8.51
HAIRSPRING A03610 $6.97
CRYSTAL W-39 1/2 AOW39.5 $4.68
BEZEL & CRYSTAL ASSEMBLY A0359039 $18.44
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