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