| 摘要 |
The disclosure relates to pad printing of video targets on a specimen for tensile or similar testing by a video extensometer. The pad printer may include various improvements such as pneumatic pistons to vary the pad spacing; pad supports which vary their spacing between ink pick-up and printing thereby allowing for a range of printing for a given cliche or printing plate; automatic proportional gauge length calculation; and a combination of a mechanical boss and a magnetic plate to secure the printing pad to the pad carrier.
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