Ref: LTRG23 - TDS – Issue 2 February 2018

Using the Gauge:

Rail Wear Gauge: Part number LT/RG/23

PADS ref: 0039/028152

The Rail Wear Gauge has been developed to enable

engineers to assess to the amount of wear present of the

head of the rail.

Technical Data / Product Description

The Rail Wear Gauge is used primarily by welding engineers to assess the amount of wear, the result of

which then enables the engineers to select the correct size of moulds to use for both Thermit and Railtech

thermic alumino welding processes. It also used by weld inspectors and P/Way engineers again to assess

the amount of wear present in the head of the rail.

The gauge is designed to be used on the following types of rail sections:

Bull head: 95.

Flat bottom: 80A, 98, 109, 110A, 113A and UIC 60.

The gauge incorporates an engraved graduated sliding arm, which not only indicates the amount of wear

present in the head of the rail, but also if new rail is oversize. Each rail section has a nominal height when

new; however during the rail manufacturing processes the rail can be oversize. This will be indicated on the

gauge as a + (plus) measurement and the graduations are hi-lighted in red, whereas rail wear is indicated as

a – (minus) measurement and the graduations are hi-lighted in green.

Each gauge is engraved with a serial number to aid the recording of asset tracking / periodic recalibration.

For protection, the gauge is supplied in a close hair cell black leather wallet and is supplied with a certificate

of conformity.

1) Un-tighten the rear locking screw.

2) Lift the sliding jaw.

3) Position the gauge onto the rail, so that the bottom foot pad contacts the underside of the rail foot,

and the web stop contacts against the web of the rail.

4) Lower the sliding jaw so that the top pad contacts the top of the rail section. This process should

align the gauge so that it ‘sits’ vertically and square on the rail.

5) Secure the sliding arm by lightly tightening the locking screw.

6) Slide the gauge clear of the rail.

7) Check the reading.

Using the Gauge:

General Description:

Ref: LTRG23 - TDS – Issue 2 February 2018

Page 2

Top head pad

Bottom foot pad

Web stop

Sliding arm

Datum plate

All graduations in green indicate rail wear

All graduations in red indicate oversize rail

In this example the 95lb Bull head rail is showing

0.5mm of wear.

However, on the 98lb flat bottom rail section the

gauge is indicating that the rail is 2mm oversize.

Ref: LTRG23 - TDS – Issue 2 February 2018

Page 3

Description Rail Wear Gauge

Part Number LT/RG/23

PADS reference 0039/028152

Range (Wear) 0 - 21mm

Graduations 1mm

Range (Oversize Rail) 0 – 9mm

Weight 0.75Kg

The gauge is supplied in a protective leather wallet

A calibration block, certified to UKAS standards to

periodically check the accuracy of the Rail Wear Gauge is

available if required. Part number LT/RG/CB – please

contact our sales office for details.

Lawton Tools (Rail Products) Ltd, 72, The Hill, Sandbach, Cheshire, CW11 1LT

Tel. No. 01270 753636 Fax. No. 01270 753737 Email:sales@lawtontoolsrail.co.uk Website: www.lawtontools.co.uk