0:02
Please enable Javscript
Handheld counter multiple clicks
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0:01
Please enable Javscript
Handheld counter single click
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0:01
Please enable Javscript
Handheld counter single click
Please enable Javscript
0:01
Please enable Javscript
Handheld counter multiple clicks
Please enable Javscript
0:01
Please enable Javscript
Handheld counter multiple clicks
Please enable Javscript
0:01
Please enable Javscript
Handheld counter with multiple clicks
Please enable Javscript
0:01
Please enable Javscript
Handheld counter single click
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0:17
Please enable Javscript
Adding on a calculator
Please enable Javscript
0:04
Please enable Javscript
Calculator machine paper till roll printing two bursts
Please enable Javscript
0:01
Please enable Javscript
Calculator machine multiple buttons being depressed
Please enable Javscript