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Interapid test indicator
spare parts - repair parts

 

 

Note: the drawings above are for the Interapid .0001" horizontal models. The parts for the .0005" indicator and the vertical models may have a slightly different appearance. Order parts for all models from the list below.

Test indicators with .001" graduations such as model 312B-20 and 312B-20V will take the same parts as the .0005" indicators.

Model 312B-15 and 312B-15V will take the same movement parts as the other .0001" models. The return lever is different and unique. Check the parts list carefully if ordering for these.

Professional repair service is available from Long Island Indicator if you'd rather have us take a look. See page 30 for details.

pointinghandvintageimagegraphicsfairy2
To
order online, click on any (brown) part number showing a price. If there is no price, make note of the part numbers you need and then
click on the [$] sign.

0

plastic box for 312B-15 and 312B-15V models

106461

[$]

0

plastic insert for 106461

112324

[$]

0

plastic storage box (not suitable for 312B-15 or 312B-15V)

111473

[$]

1

body 312B-1, 312B-2, 312B-20

111360

[$]

1

body 312B-3, 312B-4, 312B-15

111361

[$]

1

body 312B-1V, 312B-2V, 312B-20V

107480

[$]

1

body 312B-3V, 312B-4V, 312B-15V

111949

[$]

3

outer dial 0-40-0 (1.5" diameter)

026420

[$]

3

outer dial 0-10-0 (1.5" diameter)

026421

[$]

3

outer dial 0-15-0 (1.5" diameter)

026422

[$]

3

outer dial 0-4-0 (1.5" diameter)

026423

[$]

3

outer dial 0-10-0 (1" diameter)

026425

[$]

3

outer dial 0-15-0 (1" diameter) .0005"

026426

[$]

3

outer dial 0-15-0 (1" diameter) .001"

026428

[$]

4

screw for dial (see note below)

105912

[$]

5

hand, revolution counter

108205

[$]

6

hand for 1" dial

108045

[$]

6

hand for 1.5" dial

item5

108046

[$]

7

contact lever .0001” (see notes)

110547

[$]

7

contact lever .0005”

110614

[$]

8

rack lever .0001”

110518

[$]

8

rack lever .0005”

110610

[$]

9

return lever .0001”

123083

[$]

9

return lever .0005”

123084

[$]

9

return lever for 312B-15 and 312B-15V

123101

[$]

10

ball bearing with spanner nut

109941

[$]

11

spanner nut

123073

[$]

12

carbide contact points see page 21

13

pivot

105925

[$]

14

screw for dovetail

106289

[$]

15

dovetail large

106288

[$]

16

dovetail small

106287

[$]

17

screw, travel limit

111326

[$]

18

stem attachment screw (A) see notes below

111318

7.80

19

stem attachment nylon (B) see notes below

111319

7.80

20

stem attachment 4 mm (C) see notes below

111317

22.00

8 mm adapter (fits over 4mm stem) #74.108942

108942

20.00

3/8” adapter (fits over 4mm stem) #74.108943

108943

21.20

21

stem attachment washer (D) see notes below

106034

7.10

22

stem attachment bushing (E) see notes below

110666

9.40

23

screw attaches movement to body from the back

105908

7.20

24

bezel with crystal installed (1”) for models ending -2 -20 -4 -2V -20V

123079

21.50

24

bezel with crystal installed (1.5”) for models ending -1 -3 -15 -1V -3V -15V

123080

25.50

24

bezel only, small (1”)

110477

[$]

24

bezel only, large (1.5”)

110479

[$]

25

crystal, small bezel size 1” (see note below)

105967

13.90

25

crystal, large bezel size 1.5” (plastic 36.0 mm convex) see notes

105968

14.20

27

extension ring for large bezel

110300

[$]

28

complete movement for B-1, B-2, B-20, B-1V, B-20V, B-2V

111904

[$]

28

complete movement for B-3, B-4, B-3V

111905

[$]

28

complete movement for B-15 and B-15V

026077

[$]

29

contact point wrench

018603-07

[$]

30

dial 312-1 insert

026403

[$]

30

dial 312-3 insert

026404

[$]

30

dial 312B-1 insert (use with dial ring 026422)

026409

[$]

30

dial 312B-3 insert

026410

[$]

30

dial 312B-2 insert

026411

[$]

30

dial 312B-20 insert

026413

[$]

30

dial 312B-3v insert

026414

[$]

30

dial 312B-1v insert

026415

[$]

30

dial 312B-2v insert

026416

[$]

30

dial 312B-15 insert

026418

[$]

30

dial 312B-15v insert

026419

[$]

31

center pinion for 312-1, 312-2, 312-1V and 312-2V

123089

[$]

31

center pinion for 312B-1, 312B-2, 312B-20, 312B-1V, 312B-2V, 312B-20V

123089

[$]

31

center pinion for 312-3, 312-4, 312B-3, 312B-4 and 312B-3V

123097

[$]

31

center pinion for 312B-15 and 312B-15V

123097

[$]

32

bearing .0005” bottom

123088

[$]

32

jewel .0001” bottom

123096

[$]

33

hair spring gear .0005”

123091

[$]

33

hair spring gear .0001”

123099

[$]

31

hair spring gear for 312B-15 and 312B-15V

123099

[$]

34

spring washer

123082

[$]

35

lower movement plate for .0005" and .001" models

123086

[$]

35

lower movement plate for .0001" and 312B-15 and 312B-15V

123094

[$]

36

bearing .0005” top

123090

[$]

36

jewel .0001” top

123098

[$]

37

pin for hair spring

123078

[$]

38

screw for bridge

123076

[$]

40

crown gear for 312-1, 312-2, 312-1V and 312-2V

123087

[$]

40

crown gear for 312B-1, 312B-2, 312B-20, 312B-1V, 312B-2V, 312B-20V

123087

[$]

40

crown gear for 312-3, 312-4, 312B-3, 312B-4 and 312B-3V

123095

[$]

40

crown gear for 312B-15 and 312B-15V

123095

[$]

41

retaining ring (mounting ring with threads)

123081

[$]

42

hair spring .0005”

123092

[$]

42

hair spring .0005” and gear #123091 assembled

123092A

[$]

42

hair spring .0001”

123100

[$]

42

hair spring .0001” and gear #123099 assembled

123100A

[$]

42

hair spring for 312B-15 and 312B-15v

123242

[$]

43

screw for crown gear

123075

[$]

44

crown gear bearing

123074

[$]

pointinghandvintageimagegraphicsfairy2a
click on [$] or go to Price List and Order Page

Notes

 

Screw for dial: under some conditions these little screws have an annoying habit of unscrewing themselves as a result of vibrations. Don't take it personally if this happens to you. We suggest you tighten the screws on a regular basis—perhaps each time you calibrate the indicator—so that they won't fall out and jam up the works. It's a little bit like tightening those screws on your eyeglass frames, before they fall out—probably while you're on vacation somewhere. (The manufacturer solved this problem in new models made in 2014 by simply gluing these small dial screws in place. This can make it very hard to remove them during a repair.)

Horseshoe Clips used on the old Interapid 310 and 311 series indicators can be purchased from Mr. Wayne Root who has manufactured a supply of these. They are available on E-Bay by clicking here.

FYI: Ball Bearing tap size M4x0.35

Hair springs can be daunting so we've made a hair spring and gear assembly available. Just remove the old gear and hair spring, and replace with the new. See the parts list above.

Up and down pressure on the contact point should be about even. This is the function of the return lever (drawing #9) and the shape of the spring. For ideal performance, the shape of this spring should mimic that of a brand new part. Often times, this spring gets bent out of shape when it is removed during a repair attempt.

IMG1235 IMG1237

Part 123083 (left) for .0001" indicators, part 123084 (right) for .0005" indicators showing ideal spring shapes.

Crystal replacement: Interapid crystals are not user replaceable. They require a crystal press for insertion. The crystals are flat or just slightly convex, slightly over-sized and must be inserted with a crystal press. The crystal press will make them dome-shaped and this is what keeps the crystals in place. You can opt to purchase the bezel with crystal already installed (see parts list above) so that you simply remove the old bezel and screw on the new bezel with the new crystal, or you can send us the indicator with instructions to replace the crystal only. The cost is $30.

Removing the bezel: The bezel is threaded and unscrews. Hold the lower bezel plate steady with a small screw driver or pin, placed in one of the two holes, while you unscrew the bezel (see details below).

Stem attachment: If the mounting stem is bent or broken you can replace it with a bit of care. When you remove the old stem, don't lose the other parts. Unscrew A (#18), remove B (#19), tap out the bushing E (#22), save the washer D (#21) which goes on the inside, then remove stem C (#20). Reassemble in reverse order.

 

oldsytlestem
Be advised that we only sell the new style stem attachment. Old style stem attachments, pre-1965, are no longer available.

The old style, shown in the photo to the left, had an adjusting screw built into the stem and had a large diameter chrome pin running through the sides. It did not have the components shown in the drawing above.

It will not be possible to install the new style stem into the old model bodies.

 

 

IMG1205

Contact lever 110547 installed on the pivot. When replacing, be sure you do not install it backwards. The pivot and the contact point are not included when ordering this part.
 


 

How to tighten a loose bezel

bezeltightening
The bezel is screwed on as you have probably noticed.

Take a look under the rim and you'll see two holes. Insert a rod, a pin, a screw driver, something small into one of the holes. This will keep the plate from rotating while you turn the bezel and now you can tighten it again, by hand.

If you have the small diameter bezel, there won't be any holes but there will be two slots (you can also see this slot in the enclosed photo). The slots serve the same purpose for the small diameter indicators (but not for the large diameter).

 



 

 

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14 Sarah Drive — Hauppauge NY 11788 — USA
 


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This page's most recent revision: 9 JULY 2014
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