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PIPEASSIST

GEBOLexikon

Caliper (Vernier Caliper)

Caliper for precise measurement of pipe outer diameters. Indispensable for selecting the correct GEBO product — even 1 mm difference means a different size.

  • Measure pipe outer diameter
  • Determine thread diameter
  • Measure wall thickness (with internal measurement)
  • Check insertion depth
  • ALWAYS measure the outer diameter — not the inner diameter!
  • Measure multiple times (pipe may be oval)
  • Digital caliper for easy reading
  • Attention: Steel DN 25 = 33.7 mm outer diameter ≠ 25 mm!
  • Use diameter assignment table in GEBO catalog