Testex Press-O-Film Replica Tape offers a unique replica technique and with a simple Testex Micrometer or PosiTector RTR Replica Tape Reader will allow you to take accurate, low-cost blast-surface profile measurements. Testex Press-O-Film makes surface replicas easy to obtain and produces average maximum peak-to-valley readings that ensure optimum blasting effectiveness. Replicas can be retained for future needs. The accuracy of Testex measurements is due to an innovative two-level film that can produce virtually exact replicas of the abrasive blast surfaces. The film is available in three different thickness grades to cover the most common range of blast profiles. Measurements can be taken in locations that are not possible using conventional stylus devices, e.g. internal pipe diameters and grooves, etc. Easy to use, remove the protective paper from the tape and place firmly on the blasted surface. Apply moderate pressure with the Burnishing Tool over the circular cut-out in the tape. Remove the tape. The replica is now ready for measurement using the Snap Gauge. The Testex Tape is available in a Test Kit, comprising one roll of Coarse and one roll of X-Coarse Testex, Dial Thickness Gauge (specify metric or inch gauge), Training Surface, Burnishing Tool and instructions. 
Testex Gauge
The Testex Gauge is used to measure the Testex Tape and determine the average maximum peak-to-valley height of the blasted profile. Measurements are made by firstly zeroing the gauge on 50μm (2mils). This is to allow for the film backing. Place the replicated area between the anvils and gently lower the moveable anvil onto the film. The reading can now be taken, giving you the average peak-to-valley height of the blasted profile. Supplied in a Carrying Case with Burnishing Tool. The Testex Snap Gauge is available in a Test Kit, comprising 2 rolls of X coarse Testex (specify if you require other grades), Snap Gauge, Training Surface, Burnishing Tool and instructions. 
Complies with International Standards
Specifications
Testex Press-O-Film replica tape is available in a variety of thicknesses to facilitate profile measurement in differing ranges: | Grade (descriptive) | Range When Used With Gauge
(mils) / (microns) | | Fine / Medium | not applicable | | Coarse Minus | 0.5 to 1.0 / 12 to 25 | | Coarse | 0.8 to 2.5 / 20 to 64 | | X-Coarse | 1.5 to 4.5 / 38 to 115 | | X-Coarse Plus | 4.6 to 5.0 / 117 to 127 |
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