Elcometer 456 Coating Thickness Gauge Scan Probe

Featuring a highly durable ‘snap on’ replaceable probe cap, the Elcometer 456 Coating Thickness Gauge Scan Probe is a revolutionary design which allows users to take individual dry film thickness readings or rapidly scan large surface areas - without damaging the probe or the coating.


When used in conjunction with the Elcometer 456 Coating Thickness Gauge Scan or Auto Repeat Modes*, the Scan Probe enables users to significantly reduce dry film thickness inspection times without affecting accuracy.


The Scan Probe uses the Elcometer 456 Coating Thickness Gauge’s patented offset feature+, ensuring that any cap wear during use# is incorporated within the calibration process. The coating thickness gauge even informs the user when to replace the cap.


Scan Mode

Scan Mode


When the Scan Mode* is selected from the coating thickness gauge, users can slide the Scan probe over the entire surface area. As the probe is lifted off the surface the gauge displays the average coating thickness value, the highest thickness and the lowest dry film thickness values. Each set of three dry film readings (average, high and low) can be displayed on the run graph and stored into the coating thickness gauge's memory.


During each scan, the Elcometer 456 coating thickness gauge displays the live thickness reading together with an analogue bar graph which graphically indicates the thickness relative to both the nominal thickness and any user-defined limits.

456 scan mode Scan Mode 2 Scan Mode 3
Scan Mode* stores the average, highest and lowest readings over a test area During a scan the live reading together with an analogue bar graph is displayed The Run Chart displays the average thickness as well as the highest and lowest readings for each scan


Auto Repeat
Auto Repeat Mode


When the Scan Probe is slid over the coated surface in Auto Repeat Mode*, a coating thickness reading is taken approximately every half a second. Each individual dry film thickness reading is stored into the memory.


With a reading rate in excess of 140 readings per minute, the Auto Repeat Mode can significantly speed up the dry film thickness inspection of large coated areas.

Auto Repeat 1 Auto Repeat 2 Auto Repeat 3
Auto Repeat Mode* measures and stores into memory over 140 individual readings per minute The gauge updates and displays the statistical values as each individual reading is taken The Run Chart displays each individual reading allowing the user to identify any significant trends
Counted Average
Counted Average Mode


The Elcometer 456 Coating Thickness Gauge Model S and Model T are supplied with the Counted Average Mode. Once the user has defined the number of individual gauge readings to be taken within a spot measurement, the coating thickness gauge stores the average of the individual gauge readings into the memory.


Fixed Batch Sizes


The Fixed Batch Size feature within the Elcometer 456 Coating Thickness Gauge Model T allows users to define the maximum number of readings in each batch. Once the maximum number of readings has been reached the thickness gauge automatically opens up a new batch which is linked to the previous batch (name-1, name-2, etc.).


Working with Standards and Test Methods


International Standards and test methods often describe the number of individual coating thickness gauge readings to be taken in a spot measurement and/or the number of spot measurements required over a defined surface area.


SSPC PA2 requires a minimum of three coating thickness gauge readings to be taken per spot measurement and five spot measurements over 10m2 (~100ft2).


The Elcometer Coating Thickness Gauge 456 Model S or Model T can be set with a counted average of three and a fixed batch size of five to meet these requirements. Each batch defines an area of measurement.


When the Elcometer 456 Scan Probe is connected to the Elcometer 456 Coating Thickness Gauge Model T with Auto Repeat Mode selected, SSPC PA2 (or similar test methods) can be completed more than 40% faster.


* Scan and Auto Repeat Modes require an Elcometer 456 Model T gauge with Scan Probe. 

+ Patent Number US6243661
# When tested on smooth surfaces probe end caps have been scanned in excess of 50km (30 miles).