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Mahr Federal and Federal Gage
Indicator Spare Parts

 

Although spare parts for Federal or Mahr Federal dial indicators and MarTest test indicators can be purchased directly from the manufacturer, you may find what you want below.

Federal dial ring DL-32146 as shown above (2" diameter) ... $21.00

Federal dial ring DL-32026 as shown above (2" diameter) ... $21.00

Federal dial ring DL-32091 as shown above (2" diameter) ... $21.00

Dial ring DL-32021 as above but with 0-5-0 dial for Sunnen Dial Bore Gage ... $21.00

 

Federal Crystals

 

Crystals need to be inserted with a crystal press. If you need instructions, take a look at page 15.

  • Indicators beginning with the letter "A" use crystal W250 ... $4.90
  • Indicators beginning with the letter "B" use crystal W430 ... $5.90
  • Indicators beginning with the letter "C" use crystal W645 ... $6.90
  • Indicators beginning with the letter "D" use crystal W835 ... $12.90
  • Indicators beginning with the letter "E" use crystal PT06908 ... $18.00

 

  • Bezel screw for all the above SW380 ... $6.90

     

Old Style Mahr Compramess and Milimess

 

The crystals are no longer available for the old style Mahr Compramess or Milimess and the new crystals won't fit. The old style had flat edges and was held in place with a metal retainer. The new style is contoured at the edges and no retainer is necessary. The new style is also larger. Mahr has no replacements for these so, sad to say, the old comparators are beyond repair.

 

New Style Mahr Federal Indicator

 

These will have the typical light-green dial of gages made in Providence and the logo "Mahr/Federal" will be printed on it. They have a snap-on plastic bezel assembly with crystal installed and 2 tolerance markers. The bezel can be pried off using a flat blade screw driver. It is nearly impossible to install new crystals—standard crystal presses are not suitable—making it almost mandatory to buy the entire bezel-crystal assembly.

  • B size indicators such as model B2I ... BZ-1612 ... $47.00

The old style metal bezels held in place with three small screws are no longer available. You can replace them with these new plastic bezels.

 

Federal Indicator user replaceable parts

Federal Model

Description

Part No.

C2I

End cap (dust cap)

CS-1513

Rack spring (C series)

SP-623

Metal bezel (no longer available)

Plastic bezel (see above)

Models beginning with B or C

Screw for bezel clamp

SW-327

FederalIndicatorSchematic

This representative drawing gives you a general idea of the names of the parts found in the Federal dial indicators. The parts' appearance will vary from model to model. You must determine which part your model requires before you place an order. This can only be done by studying the parts breakdown for your specific model. You can contact Mahr-Federal in Rhode Island (1-401-784-3100) to request such parts breakdowns. We can not accept returns for parts ordered by mistake.

Federal Spare Parts

Part No.

Items currently in stock. While supply lasts. Click on the part number to place an online order. Sorry, no returns on Federal parts from this list.

Price (US$)

AW-329

screw (for back)

2.00

BS-127

lifting block

2.00

BU-31

bushing (brass)

2.00

BU-1108

bushing

2.00

BU-20009

bushing (over sized)

2.50

BU-20048

bushing (new style size "C")

2.00

BU-20650

bushing

2.00

BZ-11

bezel

12.00

BZ-63

bezel

12.00

BZ-66

bezel

12.00

BZ-395

bezel (metal) with crystal installed

36.00

CP-9

bezel clamp (without screw)

8.00

CP-31

green plastic clamp for bore gage

12.00

CP-2146

clamp

12.00

CP-2198

clamp

12.00

CS-110

cover (end cap)

3.00

CP-1513

cover (end cap)

3.00

CY-10

glass for WC2I (et al.)

24.00

DB-101

bore gage equalizer (Boice Model 1/4 to 1/2 inch)

90.00

DB-130

bore gage gaging pin (Boice Model 1/4 to 1/2 inch)

72.50

DL-LT1/2

dial for Federal Testmaster LT-1/2

18.00

DL-LT6

dial for Federal Testmaster LT-6

18.00

DL-LT10

dial for Federal Testmaster LT-10

18.00

DL-Mod2

dial for Federal Testmaster Model 2

4.00

DL-M2

dial for Federal Testmaster M- 2 .0001"

4.00

DL-T1

dial for Federal Testmaster T-1

4.00

DL-T6

dial for Federal Testmaster T-6

4.00

DL-T9

dial for Federal Testmaster T-9

4.00

EX-104

rack extension

4.00

GR-3

rack lever .0005"

4.00

GR-5

rack lever .0001"

4.00

GR-10

rack gear assembly

74.00

GR-347

rack gear assembly

40.00

GR-365

rack gear assembly

4.00

GR-1735

rack gear assembly

26.50

GR-2144

rack gear assembly

4.00

GU-6

rubber bellows

9.00

HD-13

revolution counter hand

17.00

HD-35

hand for Group B indicators

18.00

HD-36

hand for Group C indicators

18.00

HD-38

hand for Group D indicators

20.00

HD-39

hand

21.75

HD-76

hand

3.00

HD-85

hand

3.00

HD-97

hand

8.00

HD-2126

hand

3.00

PS-237

rack guide pin (slide pin)

12.50

RK-13

rack

59.95

RK-14

rack

59.95

SP-814

hair spring

16.50

SW-327

bezel lock screw

12.00

SW-620

rack stop screw

12.00

TS-6

jewel assembly for contact point, models LT-1-2, LT-1, LT-2, LT-9, LT-11

6.00

Q&A about your Federal Indicators

 

A: I just bought a used Federal C81S dial indicator. When you manually push and release the stem it doesn't return to the same number. The rev counter is on 2 instead of zero. It seems pretty smooth. Can this be repaired?

  • It could be repaired but Federal parts are so expensive that you will probably find it is not economical. Try this: remove the back cover and check to see that the return spring is still attached to its post. The spring could have been dislodged and that would account for the symptoms you describe.

     

 

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What you need to know, when you need to know it:
The Companion Reference Book on Dial and Test Indicators

LIISBook1

Long Island Indicator Service Inc
14 Sarah Drive — Hauppauge NY 11788 — USA
 


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This page's most recent revision: 29 JULY 2015
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