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Test Indicator Contact Points

 

 

For the following brands of test indicators:

 

Related topics:

  • Changing contact points on your test indicator on page 15
  • Cosine error: How to compensate: see page 21
  • Long Points: see page 21
  • Ruby, Teflon and Nylon points avoid scratching surfaces, are non-conductive: see page 21
  • Are you looking for dial indicator points? They're on page 133.

     

Teclock and SPI

 

These are the only contact points we have for Teclock test indicators and even these are in limited supply. Once they're gone, they're gone. They will also work with the SPI indicators made in Japan. M1.6 thread

  • $19.50 each

     

Teclock model

SPI model

Contact Point
Length

Ordering Number
(ø carbide ball)

LTI-355 .0001"

24-401-2

.625"

 

24-466-5 (.040")
24-467-3 (.080")
24-468-1 (.120")

LTI-352 .0005"

24-400-4
24-402-0

.750"

 

24-471-5 (.040")
24-473-1 (.120")

Federal

 

The new-style but discontinued Federal indicators (T-101, T-102, etc.) are manufactured by Tesa in Switzerland. The contact points are identical to those used by Bestest and Tesatast indicators. For that reason, your order form will make reference to Bestest contact points rather than Federal points. These points will not fit the newest indicators made in Germany which are sold with the name MarTest.

Old style points (M-1, T-1, etc.) have ratchets rather than threads. They slip into place. If you use a magnifying glass you'll be able to see how they're meant to fit The length is measured from the center of the ball to the center of the pivot.

  • carbide ball point ... $19.50 each
  • ruby ball point ... $29.50 each

     

Model

Contact point length

Order Number
(ø carbide)

Order Number
(ø ruby)

 

T-1
T-5
LT-1
LT-5
LT-9
LT-10

.398"

MTC31-13 (.093")
(Federal #PT-173)

n/a

 

T-2
T-3
T-6
T-7
LT-2
LT-
6

.331"

MTC31-04 (.093")

n/a

 

T-11
LT-11
LT-12

1.660"

MTC31-22 (.093")
(Federal #PT-5656)

n/a

 

T-101
T-109
LT-109
T-102
LT-102
LT-150
T-104
LT-104
T-123
LT-123
T-105
T-106
LT-113
T-108

.5"
(12.5 mm)

018602-00 (.015")
018602-01 (.040")
018602-02 (.080")
018602-03 (.120")

018602-05 (.040")
018602-06 (.080")

 

T-111
LT-111
T-103
LT-103

1.436"
(37 mm)

018602-11 (.040")
018602-12 (.080")
018602-13 (.120")

018602-14 (.040")

Mercer

 

How are they measured? You may see two different lengths for each Mercer test indicator depending on which catalog you're looking at. We measure these from the shoulder of the point to the center of the ball. The manufacturer calls this the L2 dimension (see illustration) and this is the length shown below. Thread size is M1.6

A word of caution: don't confuse these Mercer model numbers with the Interapid metric indicators, some of which have the same numbers (312-1 for example)! The following points are specifically for Mercer indicators, made in Switzerland. For additional information on Mercer test indicators see page198.

  • carbide $19.50
  • ruby $29.50

     

Model

Contact Point Length L2

Ordering Number
(ø carbide)

Ordering Number
(ø ruby)

303-1

.572"

018660-35 (.015")
018660-11 (.031")
018660-05 (.080")
018660-18 (.120")

018660-32 (.040")
018660-30 (.080")
018660-33 (.120")

312-1

1.203"


018660-34
(.015")
018660-24 (.031")
018660-09 (.080")
018660-25 (.120")
 

018660-31 (.080")

301-1
305-1
306-1

.528"

018660-26 (.015")
018660-10 (.031")
018660-07 (.080")
018660-17 (.120")

310-1

1.653"

018660-12 (.031")
018660-08 (.080")
018660-19 (.120")

302-1
304-1
307-1

14.26 mm

018660-14 (0.8 mm)
018660-03 (2 mm)
018660-21 (3 mm)

313-1

32.26 mm

018660-16 (0.8 mm)
018660-04 (2 mm)
018660-23 (3 mm)

311-1

41.26 mm

018660-15 (0.8 mm)
018660-06 (2 mm)
018660-22 (3 mm)

Bestest

 

The model suffix (-3 and -5) refers only to whether the dial is white or black. For example 7030-3 and 7030-5. Older, obsolete models had -2 or -1 as a suffix. They also use the same contact points. Points are identical for inch and metric models. Thread size is M1.4 (outside diameter is about 1.4 mm).

You can also buy a special double length point which is 1" long. The readings on the dial will also be doubled. In other words, the .0005" indicator will now read .001". Make sure you label your indicator when you do this, so that no one misreads the dial.

How are they measured? From the shoulder (not including the thread) to the center of the ball. Custom ball diameters are available as well as teflon and nylon. Bestest contact points can be used with the Adapt-A-Tip adapter (shown on page 133) for dial and digital indicators.

  • $19.50 each
  • $15.60 each for 3 or more (of one kind)
  • $29.50 each for ruby or Teflon contact points (any quantity)

     

Model*

Length

Carbide

Ruby

Teflon

7021-*
7022-*
7023-*
7024-*
7029-*
7030-*
7031-*
7032-*
7033-*
7037-*
7038-*

.5"
(12.5 mm)

018602-00 (.015")
018602-01 (.040")
018602-02 (.080")
018602-03 (.120")

018602-05 (.040")
018602-06 (.080")

Teflon:

MTC21-22 (.060")
MTC21-23 (.080")

Nylon:

MTC21-25 (.060")

for all the above

1"
double length

MTC21-28 (.015")
MTC21-34 (.030")
018602-04
(.080")

not available

not available

7034-*
7035-*

1.436"
(37 mm)

018602-10 (.015")
018602-11 (.040")
018602-16 (.060")
018602-12 (.080")
018602-13 (.120")

018602-14 (.040")
MTC22-16 (.080")

Teflon:

MTC22-19 (.060")

 

* these numbers are valid for all -1, -2, -3, -13 and -5 models such as 7030-13, 7035-5 and 7032-3, etc.

 

Micro-Hite 350 / 600 / 900
Tesa-Hite 350 / 600
Tesa-Hite plus D 350 / 600

 

These carbide or ruby ball points can be used on your Micro-Hite or Tesa-Hite if you use the holder designed to accept contacts with M1.4 threads. For different lengths and more contact point options, see Bestest points above. They will all fit if using this special holder:

Special holder (diagram shown above, contact point not included) 599-1011-212 ... $89

Carbide points are discounted when ordered in quantities:

  • $19.50 each
  • $15.60 each for 3 or more (of one kind)
  • $29.50 for ruby points (any quantity)

     

Model

Contact point length

Order Number
(ø carbide)

Order Number
(ø ruby)

Micro-Hite and
Tesa-Hite

.5" (12.5 mm)

 

018602-00 (.015")
018602-01 (.040")
018602-02 (.080")
018602-03 (.120")

018602-05 (.040")
018602-06 (.080")

Mahr Puppitast

 

The Mahr Puppitast series of indicators has been discontinued, but points are still available, in carbide only.

 

Puppitast model

Contact Point Length

Ordering Number
(ø carbide ball)

Price USD

800 S 0.01 mm

.545"

MTC42-03 (2 mm)

19.50

800 SZ .0005"

.515"

MTC43-04 (2 mm)

19.50

800 SLZ .0005"

1.5"

MTC43-10 (2 mm)

19.50

Kafer - Kaefer - Käfer

 

These are the only contact points we have for Kafer test indicators. SPI also sells these indicators under their own brand name, but be sure that they're made in Germany. SPI also sells indicators made in China and these points won't fit.

 

Kafer model

Contact Point Length

Ordering Number
(ø carbide ball)

Price USD

.0005"
(SPI 20-778-7)

.45"

52288 (1 mm)
52287 (2 mm)
52289 (3 mm)

19.50

Peacock

 

These are the only contact points we have for Peacock test indicators. Since we do not know the various model numbers, you will have to decide from among the available lengths. The thread size is M1.7

 

Peacock model

Contact Point Length

Ordering Number
(ø carbide ball)

Price USD

.0005"

.75"

MTC56-04 (.080")

19.50

.0005"

1.75"

MTC56-14 (.080")

19.50

.0001"

.375"

MTC56-10 (.080")

19.50

 

Note: The information on this page is gleaned from various manufacturers' catalogs and is accurate to the best of our knowledge, barring any errors in transcription. Please let us know should you notice a discrepancy. The schematic drawing is courtesy of Tesa SA.

 

Alina

 

Even though Alina test indicators are long obsolete, some contact points remain in stock. Thread size M1.7 Length is measured from center of ball to shoulder.

 

Alina model

Contact Point Length

Ordering Number

Price US$

K22, K24, K26, K28

.515"

K030 (.030")
K050 (.050")

19.50

M31, M32, M33, M34

.543"

M015 (.015")
M050 (.050")
M080 (.080")

19.50

MarTest

 

MarTest carbide points are measured from the center of the ball to the shoulder. The proper point length is often shown inscribed on the body of the indicator. That way you have no excuse for installing the wrong point. The new MarTest contact points have M2 threads. These points will not fit the older Mahr test indicators such as Puppitast. See this page for information.

  • $19.50 each for carbide points
  • $29.50 for ruby points

     

New MarTest model

Contact Point Length

Ball diameter

Mahr Number

Our order number

800 S

801 S

800 SG

801 SG

800 SM

801 SM

800 SGM
801 SGM
others in this group

14.5 mm

ø 1 mm carbide
ø 2 mm carbide
ø 2 mm ruby

4305870
4305850
4309051

MTC43-24
MTC43-25
MTC43-27

Mahr Electric 1318

 

Stylus (probes) for the electric Mahr model 1318 indicator has M1.6 threads and measures 21 mm long. These are American made replacement points which cost about 10% of the original German article (see item 7003902 below).

 

Ball diameter

Ball

Order number

Price US$

1 mm

Carbide

7003902

195.00

1.5 mm

Carbide

MTC43-15

19.50

2 mm

Carbide

MTC43-16

19.50

3 mm

Carbide

MTC43-18

19.50

1.5 mm

Ruby

MTC43-20

29.50

2 mm

Ruby

MTC43-21

29.50

3 mm

Ruby

MTC43-23

29.50

SPI "Integra" - Xtest

 

Carbide contact points for the made-in-China generic Interapid look-alike sold by SPI, Fowler and other catalog houses. These points are about 5/8" long. For SPI model 14-842-9, 14-840-3, 14-848-6, 14-843-7, 14-841-1 and 14-849-4

 

Ball diameter

Ball

Order number

Price US$

2 mm (.080")

Carbide

15-425-2

19.50

 

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This page's most recent revision: 31 January 2012
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