Elcometer 307 Ultrasonic Precision Thickness Gauge - Discontinued


Replaced by the Elcometer PTG

The Elcometer 307 ultrasonic precision thickness gauge is designed to provide accurate measurements of thin materials.

Measures thin materials with pinpoint accuracy

The new flexible, easy to use Elcometer 307 has a measurement range of 0.15mm (0.006”) to 25.40mm (1.000”) with ±1% accuracy, across three measurement modes; Interface Echo (IE), Echo Echo (EE) & Plastic mode (PLAS).

Choose & customise the reading display

The new Elcometer 307 has a choice of display modes allowing the user to select the most appropriate for their needs; Readings, Selected Statistics, Bar Graph, Run Chart & Differential Mode.

User-definable limits for pass/fail indication

Limits can be set on the new Elcometer 307 for individual readings or for each batch with audible & visual pass/fail warnings.

Store each measurement for further analysis

Up to 100,000 readings can be saved into the gauge memory as each measurement is taken, which can later be downloaded into an inspection application or into ElcoMaster® for further analysis and reporting.

Data output to PC, Android or iOS mobile device

Connect the new Elcometer 307 via Bluetooth® or USB to a PC, Android or iOS mobile device & download the data into an inspection application or into ElcoMaster® for instant report generation.


Key features of the Elcometer 307 Ultrasonic Precision Thickness Gauge include:

  • Hi & Lo limit indicators provides indication of problem areas
  • 2-Point, 1-Point, Material, Velocity, Thickness Set & Factory calibration options, allowing accurate measurements of a wide range of materials
  • Up to 3 programmable calibration memories, allows the user to select a saved calibration method without the need to recalibrate the gauge
  • Selectable measurement rate of 4, 8, 16Hz (4, 8, 16 readings per second) 
  • Scan mode at 16Hz, ideal for measuring a large surface area
  • Stores up to 100,000 readings in up to 1,000 sequential batches for further analysis & downloading to a PC or mobile device
  • USB & Bluetooth® data output to ElcoMaster® PC or  ElcoMaster® Mobile App for instant report generation
  • Intelligent transducer attached with auto recognition, ensures correct probe is identified when transducer is changed. The Elcometer 307 is supplied with or without a 15MHz ¼” Microdot Right Angle Single Element Thickness Transducer. Click here for a full list of transducers.

Product Features

Precision Thickness Gauge

Easy to use menu structure in multiple languages
Tough, impact, waterproof & dust resistant; equivalent to IP54
Bright colour screen; with automatic or manual brightness adjustment
Scratch and solvent resistant display; 2.4" (6cm) TFT
Large positive feedback buttons
USB power supply via PC
Gauge software updates1 via ElcoMaster® Software
Data Output
   USB; to PC

   Bluetooth®; to PC, Android™ & iOS devices

   ElcoMaster® PC software

2 year gauge warranty2
Limits; 40 definable audible & visual pass/fail warnings
Auto transducer recognition & ‘V-path’ correction
Reading Rate

4, 8, 16Hz3

   Measurement Mode

   Interface Echo (IE)1.65-25.40mm

±0.015mm (1.65-2.99mm)

±0.0006” (0.065 0.117”)
±0.5% (0.118-1.000”)

   Echo Echo (EE)

0.15 - 10.15mm
(0.006 - 0.400”)

±0.015mm (0.15-2.99mm)
±0.5% (3.00-10.15mm)

±0.0006” (0.006-0.117”)
±0.5% (0.118-0.400”)

   Plastic Mode (PLAS)

0.15 - 5.00mm
(0.006 - 0.197”)

±0.015mm (0.15-2.99mm)
±0.5% (3.00-5.00mm)

±0.0006” (0.006-0.117”)
±0.5% (0.118-0.197”)

Measurement Units
   mm or inches

   m/s, inch/µs

Repeatability / Stability Indicator
Display Modes

   Selected statistics, Scan thickness bar graph,
   Run Chart, Readings & Differential

Selectable Reading Resolution
   Lo; 0.1mm (0.01 Inch), 10m/s (0.001 in/μs)

   Hi; 0.01mm (0.001 Inch), 1m/s (0.0001 in/μs)


   Number of readings (n), Mean (average) (x),
   Standard deviation (σ), Lowest reading (Lo),
   Highest reading (Hi), Coefficient of Variation (CV%)

   Low / High limit value, Reading Range Value,
   Nominal Value, Number of readings below low limit,
   Number of readings above high limit

Calibration Options
   Zero (using the integrated zero disc)

   1-Point & 2-Point

   Material selection; 39 preset materials

   Factory; resets to the factory calibration

   Velocity (speed of sound)

   Known Thickness Value

Calibration Features

   Calibration memories; 3 programmable memories with optional PIN calibration lock

   Measurement outside calibration warning

Data Logging

   100,000 readings in 1,000 alphanumeric batches

   Fixed Batch Size mode; with batch linking

   Date & time stamp, Review, Clear & Delete batches

   Batch review graph

Technical Specification

Part Number Description

Elcometer 307 Ultrasonic Precision Thickness Gauge

Transducer Probe typeSingle Element
Measurement ModeRange4Accuracy5
Interface Echo (IE)1.65 - 25.40mm
(0.065 - 1.00”)

±0.015mm (1.65-2.99mm)

±0.0006” (0.065 0.117”)
±0.5% (0.118-1.000”)

Echo Echo (EE)

0.15 - 10.15mm
(0.006 - 0.400”)

±0.015mm (0.15-2.99mm)
±0.5% (3.00-10.15mm)

±0.0006” (0.006-0.117”)
±0.5% (0.118-0.400”)

Plastic Mode (PLAS)

0.15 - 5.00mm
(0.006 - 0.197”)

±0.015mm (0.15-2.99mm)
±0.5% (3.00-5.00mm)

±0.0006” (0.006-0.117”)
±0.5% (0.118-0.197”)

Resolution0.1mm (0.01”) or 0.01 (0.001”) switchable
Reading Rate4, 8 & 16Hz (4, 8 & 16 readings per second)
Operating Temperature-10 to 50°C (14 to 122°F)
Data OutputUSB & Bluetooth®
Power Supply2 x AA batteries
Battery Life6Alkaline: Approx. 15 hours
Lithium: Approx. 28 hours
Gauge Weight210g (7.4oz) - including batteries, without transducer
Gauge Dimensions145 x 73 x 37mm (5.7 x 2.87 x 1.46") - without transducer
Packing List

Elcometer 307 Ultrasonic Precision Thickness Gauge, 15MHz transducer (C307CDL-TXC only) ultrasonic couplant, carry pouch, 3 x screen protectors, wrist harness, 2 x AA batteries, user guide, plastic transit case, calibration certificate, 2 year warranty extension card, ElcoMaster® software CD & USB cable.

1 Internet connection required.
2 Elcometer 307 gauge is supplied with a one year warranty against manufacturing defects. The warranty can be extended to two years here.
3 User selectable, default setting in scan mode is 16Hz.  
4 Dependent on the material being measured and the transducer being used.
5 On steel.
6 When in continuous reading mode at a reading rate of 4Hz. Rechargeable batteries may differ. 


EN 14127, EN 15317