PTC® Surface Thermometers
PTC® Instruments has been manufacturing Surface Thermometers since 1946. All PTC thermometers are made of quality materials in our Los Angeles factory and used worldwide. Every thermometer we make is calibrated by qualified technicians.

Designed for applications such as: hot plates, griddles, die-cast dies, foundry core boxes, annealing ovens, weld preheats, motors, generators, and engines, bearings, boilers, tanks, etc.

PTC® has chosen quality products from other manufactures to offer our customers a complete line of temperature measuring instrumentation.

Listed below are the many types and temperature ranges of surface thermometers manufactured by PTC® Instruments...


Fully Enclosed Surface Thermometers
  • Bimetal protected from dirt and dust
  • Mounting with magnet or silicone grease accessories
  • Temperature Ranges from -50°F to 370°F
  • ( -50°C to 180°C )
  • Accuracy ± 2% of Full Scale


Dual Magnet Mount Surface Thermometers
  • Temperature Ranges from -100°F to 750°F
  • ( -70°C to 400°C )
  • Accuracy ± 2% of Full Scale
  • Max-Min or Single Ancillary Hand
  • On Service and In Surface Tab Mounts
  • Lower Temp Ranges Available with Plastic Lens


Industrial Railroad Surface Thermometers
  • Temperature Ranges from -100°F to 750°F
  • ( -70°C to 400°C )
  • 4 Magnets for extra hold
  • Red Indicating Hand
  • Bimetal Protection Cap


Pipe Thermometers Clip-On or Pipe Thermometers Spring Held
  • Temperature Ranges from -50°F to 500°F (-40°C to 260°C)
  • May be attached with Velcro or Bungee Cord
  • Pipes sizes 3/4" O.D. to 6" O.D. (and larger)
  • Spring Kit included allows easy attachment


Digital Pipe Thermometers by Cooper Atkins
  • Temperature Range from -20°F to 300°F
  • ( -29°C to 149°C )
  • External Probe and Digital Readout
  • Pipes sizes 1/4" O.D. to 1 3/8" O.D.
  • NIST Traceable Certification Available


Tank Monitoring Surface Thermometers
  • Temperature Ranges from -20°F to 250°F
  • (-30°C to 120°C )
  • Plastic Lens
  • Optional Safety Strap Kit
  • NIST Traceable Certification Available


Direct Contact Spot Check® Thermometers
  • 570 Series Griddle Thermometers
  • Bimetal rests directly on surface for fast response
  • Magnet accessory for ferrous mounting
  • Stainless Steel models available for Vacuum use