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Compac TESA P-Line and Mercer (Swiss)

M1.6 Test Indicator Contact Point

How are Compac, TESA P-Line and Swiss-made Mercer test indicator contact points measured? The catalog length (L1) is measured from the end of the thread to the center of the ball. The actual usable length (from the shoulder to the center of the ball) is shown as dimension L2. Thread size is M1.6

  • Carbide .080" (2 mm) contact points came standard with new indicators.
  • Although Compac indicators are no longer being sold under that name, we still have a supply of carbide and ruby contact points.
  • TESA P-Line indicators use the same contact points as Compac.
Compac M1.6 Contact Points

Designed to be used with the following models:

  • 214A
  • 214GA
  • 215A
  • 215GA
  • 224A
  • 224GA
  • 225A
  • 225GA
  • 234A
  • 234GA
  • 235A
  • 235GA
  • 245A
  • 245GA
contact point length illustrated
  • L1 = .72"
  • L2 = .575"
Ball Ø Dimension L1 Compac No. Price US$ Order No.
.015" carbide .72" — 24.50 MTC25-01
.031" carbide .72" 18.66011 24.50 MTC25-02
.080" carbide .72" 18.66005 24.50 MTC25-05
.120" carbide .72" — 24.50 MTC25-07
.040" ruby .72" — 35.50 MTC25-08
.080" ruby .72" — 35.50 MTC25-09
.120" ruby .72" — 35.50 MTC25-11
Compac M1.6 Contact Points

Designed to be used with the following models:

  • 213LA
  • 213GLA
  • 223LA
  • 223GLA
  • 233LA
  • 233GLA
contact point length illustrated
  • L1 = 1.44"
  • L2 = 1.30"
Ball Ø Dimension L1 Compac No. Price US$ Order No.
.015" carbide 1.44" — 29.50 MTC25-12
.031" carbide 1.44" 18.66024 29.50 MTC25-13
.080" carbide 1.44" 18.66009 29.50 MTC25-16
Compac M1.6 Contact Points

Designed to be used with the following models:

  • 244A
  • 244GA
contact point length illustrated
  • L1 = .675"
Ball Ø Dimension L1 Compac No. Price US$ Order No.
.015" carbide .675" — 24.50 MTC25-23
.031" carbide .675" 18.66010 24.50 MTC25-24
.080" carbide .675" 18.66007 24.50 MTC25-27
.120" carbide .675" – 24.50 MTC25-29
Compac M1.6 Contact Points

Designed to be used with the following models:

  • 244LA
  • 244GLA
contact point length illustrated
  • L1 = 1.65"
Ball Ø Dimension L1 Compac No. Price US$ Order No.
.031" carbide 1.65" – 24.50 MTC26-02
.080" carbide 1.65" 18.66008 24.50 MTC26-05
.120" carbide 1.65" – 24.50 MTC26-07
Compac M1.6 Contact Points

Designed to be used with the following metric models:

  • 213
  • 213G
  • 215
  • 215G
  • 216G
  • 223
  • 223G
  • 225
  • 225G
  • 233
  • 233G
  • 235
  • 235G
  • 242
  • 242G
  • 245
  • 245G
contact point length illustrated
  • L1 = 18 mm
  • L2 = 14.26 mm
Ball Ø Dimension L1 Compac No. Price US$ Order No.
0.8 mm carbide 18 mm 18.66014 24.50 MTC26-09
2 mm carbide 18 mm 18.66003 24.50 MTC26-12
3 mm carbide 18 mm 18.66021 24.50 MTC26-14
Compac M1.6 Contact Points

Designed to be used with the following metric models:

  • 212L
  • 212GL
  • 215GL
  • 222L
  • 222GL
  • 232L
  • 232GL
contact point length illustrated
  • L1 = 36 mm
  • L2 = 32.26 mm
Ball Ø Dimension L1 Compac No. Price US$ Order No.
0.8 mm carbide 36 mm 18.66016 24.50 MTC26-16
2 mm carbide 36 mm 18.66004 24.50 MTC26-19
3 mm carbide 36 mm 18.66023 24.50 MTC26-21
Compac M1.6 Contact Points

Designed to be used with the following metric models:

  • 243L
  • 243GL
contact point length illustrated
  • L1 = 45 mm
  • L2 = 41.26 mm
Ball Ø Dimension L1 Compac No. Price US$ Order No.
0.8 mm carbide 45 mm 18.66015 29.50 MTC27-02
2 mm carbide 45 mm 18.66006 29.50 MTC27-05
3 mm carbide 45 mm 18.66022 29.50 MTC27-07
M1.6 Mercer Contact Point

Swiss made Mercer test indicators use the same contact points as Compac (shown on this page) because the indicators are identical. You can order any Compac contact point providing the length (L1) is the same. Use the chart below to determine the correct length for your particular models.

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)! Although the Mercer models are all discontinued, you can still use the Compac points.

  • Mercer 301-1 = .67"
  • Mercer 302-1 = 18 mm
  • Mercer 303-1 = .72"
  • Mercer 304-1 = 18 mm
  • Mercer 305-1 = .67"
  • Mercer 306-1 = .67"
  • Mercer 307-1 = 18 mm
  • Mercer 310-1 = 1.65"
  • Mercer 311-1 = 45 mm
  • Mercer 312-1 = 1.44"
  • Mercer 313-1 = 36 mm

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Long Island Indicator Service
Long Island Indicator Service was founded in 1960. We provide professional repair service for precision measuring tools and gages with an emphasis on Swiss made test indicators, dial indicators, dial calipers and micrometers. We are pleased to be a recognized service partner for Brown & Sharpe.

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