Contact Point extensions, converters and special shapes
for dial & digital indicators

 

  • Contact points for test indicators are shown on page 21.
  • Contact points in general:

Metric and inch point converter

 

Adapter

You can use the 4-48 contact points with your metric M2.5 indicators or vice versa if you use these simple converters. The male end will screw into the indicator spindle. The contact point will screw into the female end of the converter. The converter is 8 mm long and has a diameter of 5 mm.

male M2.5

female 4-48

MTC13-02

$12.00

male 4-48

female M2.5

MTC13-01

$12.00

male 4-48

female M2.0

MTC13-15

$15.00

male 4-48

female M1.7

MTC13-03

$15.00

male 4-48

female M1.4

MTC13-04

$15.00

male 8-36

female 4-48

MTC13-16

$19.00

Contact Point Extensions

 

These extensions will not alter the indicator's range. A 1" travel indicator remains a 1" travel indicator regardless of the extension. The extensions will allow you to reach further into a hole or groove, etc. Take the thread diameter into consideration when ordering these parts. To install: unscrew the contact point from your indicator, screw the extension into the indicator and then replace the point. You can combine extensions to your heart's content. Just make sure everything is snug and tight so that you'll get consistent readings. Outside diameter = 5 mm (.188")

Order No.

Extension Length

Thread type

Price

MTC09-14

1/4"

Inch 4-48

$7.95

MTC09-16

1/2"

Inch 4-48

$6.95

MTC09-18

3/4"

Inch 4-48

$6.95

EXT-1A

1"

Inch 4-48

$6.95

EXT-2A

2"

Inch 4-48

$6.95

EXT-3A

3"

Inch 4-48

$8.95

EXT-4A

4"

Inch 4-48

$8.95

MTC09-41

5"

Inch 4-48

$13.95

EXT-MF10

10 mm

Metric M2.5

$6.95

MTC09-44

15 mm

Metric M2.5

$6.95

EXT-MF20

20 mm

Metric M2.5

$6.95

EXT-MF40

40 mm

Metric M2.5

$6.95

EXT-MF50

50 mm

Metric M2.5

$6.95

EXT-MF60

60 mm

Metric M2.5

$6.95

EXT-MF80

80 mm

Metric M2.5

$8.95

EXT-MF100

100 mm

Metric M2.5

$9.95

Make Your Own Contact Point

 

IMG07591

We provide a one-inch or 1.5" long contact point made of soft, machinable steel (carbon steel/12L14 which has not been heat treated). It has a diameter of .188" and a 4-48 thread. You can machine, file or grind it to any desired shape or size. When you're done, you can harden it, if you like. If you need this with a metric thread, you'll have to get a converter.

  • 1" long (4-48 thread) machinable contact point MTC14-03 ... $19.50
  • 1.5" long (4-48 thread) machinable contact point MTC14-04 ... $19.50

Thin needle contact points "Adapt-A-Tip"

MTC1304a
If you need to reach into small holes or grooves you can use any one of the test indicator points which have either M1.4 or M1.7 threads, a 2 mm diameter shaft, a length of up to 5" and a small diameter carbide or ruby ball at the end. This is accomplished with an Adapt-A-Tip adapter. The adapter is about .33" long and it screws into any dial or digital indicator spindle which has a 4-48 thread. Then you screw the test indicator contact point into the adapter. It's an excellent solution for fitting into tight spots.

Adapt-A-Tip adapter (4-48 male to M1.4) MTC13-04 ... $15.00
Adapt-A-Tip adapter (4-48 male to M1.7) MTC13-03 ... $15.00

Adapt-A-Tip shown. Test indicator point is not included and is shown as an example of this adapter's use.

Examples of M1.7 contact point include Interapid and Mitutoyo test indicator points on page 21.

Examples of M1.4 contact point include BesTest indicator points on page 218.

Pin vise contact point

Pinvise
This small pin vise gives you great flexibility when your contact point needs to fit into tight spaces or small grooves.

The pin vise screws into your indicator like any contact point (be sure you select the correct thread size) and then you're free to use any of the included contacts, or one of your own design. The vise will hold pins with diameters from .035" to .060".

The complete set includes everything shown here. Replacement pins are also available and they can be used with either 4-48 or M2.5 pin vises.

Order Number

Thread

Price USD

MTC13-05

complete set

with 5 points

4-48

$39.00

MTC13-08

individual pin vise

without points

4-48

$19.50

MTC13-09

individual pin vise

without points

M2.5

$19.50

MTC13-06

complete set

with 5 points

M2.5

$39.00

MTC13-10

replacement pin

.031" Ø flat end

$6.10

MTC13-11

replacement pin

.060" Ø flat end

$5.55

MTC13-12

replacement pin

bent

$6.35

MTC13-13

replacement pin

conical end

$6.10

MTC13-14

replacement pin

.120" Ø ball

$7.50

Federal Group 0 Points

 

These contact points fit not only the Federal miniature indicators (model numbers beginning with the letter A, such as model A3Q) but any indicator having 0-80 or 10BA thread sizes (such as Brown & Sharpe MW71). These are not original Federal points and may vary insignificantly in appearance and dimensions.

Black oxide. Made in USA. $14.50 each.

Order Number

Style

Thread

Length (L)

Federal Number

MTC16-09

flat

0-80

1/4" (Ø.125")

AL-61

MTC16-01

radius

0-80

1/8"

PT-43

MTC16-05

radius

0-80

5/8"

MTC16-10

taper

0-80

.4375"

PT-119

MTC16-11

button

0-80

Ø.375"

PT-118

Roller Point

MTC1225
The surface to be tested runs conveniently underneath this rolling contact point. The roller allows for continuous readings to be taken. Used with flat metals, foils, sheets of fabric, etc. A lock nut (included) keeps the roller aligned.

Available in non damaging Teflon®, hardened steel or stainless steel. The wheel can have a radius or it can be flat. You will probably want to use the radius wheel on a flat surface and the flat wheel (without radius) when measuring something like wire or edges.

The stainless roller without radius (shown to the left) is not as hard as hardened steel (your other option) and will wear faster under abrasive circumstances, but it will not corrode if used under wet or damp conditions.

Stainless steel rollers will be a natural steel color whereas hardened steel will have some black anodizing on the wheel.

The schematic illustration shows the wheel with a radius. The dimensions are approximate but valid for all roller points.

If you can't find the correct thread size here, consider using a converter. Rolling contact points are frequently used with Mitutoyo or Teclock indicators but will fit any indicator having the correct thread size.

Thread size M2 is commonly used on CMM machines.
 

hardened steel

without radius

4-48

MTC12-17

$39.95

hardened steel

with radius

4-48

MTC12-18

$39.95

Teflon®

with radius

4-48

MTC12-22

$39.95

stainless steel

without radius

4-48

MTC12-25

$39.95

stainless steel

with radius

4-48

MTC12-26

$39.95

hardened steel

without radius

M2.5

MTC12-19

$39.95

hardened steel

with radius

M2.5

MTC12-20

$39.95

stainless steel

without radius

M2.5

MTC12-27

$39.95

stainless steel

with radius

M2.5

MTC12-28

$39.95

Teflon®

with radius

M2.5

MTC12-24

$39.95

stainless steel

with radius

M2 (CMM)

MTC12-30

$39.95

Conical contact points

 

MTC4811

These conical steel points will fit any dial indicator or digital indicator. You will need to know the thread size or use a converter. Your price is $14.95 each.

Order Number

Conical °

Thread

Length (L)

Mitutoyo Number

MTC48-09

60°

4-48

1/2"

101190

MTC48-10

60°

M2.5

10 mm

101120

MTC48-11

90°

4-48

9/32"

101191

MTC48-12

90°

M2.5

5 mm

101385

Knife Edge Point, carbide tipped

 

Carbide tipped knife edge points have 30° edges and are equivalent to Mitutoyo knife edge points. They can be used as substitutes for other manufacturers' points as well.
 

Order Number

Mitutoyo

Length (L)

Diameter (Ø)

Thread

Price

MTC47-01

131282

0.6"

0.2"

4-48

39.00

MTC47-02

120067

15 mm

5 mm

M2.5

39.00

Bent Point

 

This .060" diameter hardened steel stem is bent as shown. Please don't ask about the angle. It is approximate. Other angles are not available. A lock nut is provided which keeps the point properly oriented.

To get correct readings, be sure that the spindle is moving perpendicularly to the measured surface. In other words, don't set your indicator spindle at an angle.

These are only available with 4-48 threads. If you want to use it on a metric indicator, you will need to get a converter.

4-48 bent contact point MTC15-10 ... $12.00

Mitutoyo style needle point (tapered steel)

 

IMG_1248

Shown above are MTC46-13, MTC46-14 and MTC46-15

These black anodized steel contact points are tapered to a rounded end which has a radius of approximately .025". The angle of the taper changes depending on the length of the point. At its widest point, the base, it will measure 5 mm. Although designed for Mitutoyo dial indicators, these will fit any other brand of indicator. Just be sure to select the correct thread size.

 

Order Number

Length

Mitutoyo part #

Thread

Price

MTC46-13

0.6"

21AAA030

4-48

12.50

MTC46-14

1"

21AAA046

4-48

12.50

MTC46-15

1.5"

21AAA047

4-48

12.50

MTC46-16

2"

21AAA048

4-48

14.50

MTC46-17

15 mm

101121

M2.5

12.50

MTC46-18

17 mm

137413

M2.5

12.50


The above items constitute advertisements on behalf of Amazon.com and are not to be construed as endorsements by Long Island Indicator Service. We strongly believe in buying quality tools and gages, and urge customers to check carefully before making a purchase. If the prices appear unusually low, we suggest proceeding with caution.
 

 

LONG ISLAND INDICATOR REPAIR MANUALS

BesTest and TesaTast Indicator Repair Manual … page 177
Starrett 711 Last Word Indicator Repair Manual … page 199
Interapid Indicator Repair Manual … page 208
Compac Test Indicator Repair Manual … page 194
Mitutoyo Test Indicator Repair Manual … page 102

New! Companion Reference Guide for Test Indicators … page 178
 

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This page's most recent revision: 9 APRIL 2018
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