IBM Salesman Sample Master Clock

This video shows the operation of an IBM Master Clock movement in a carrying case. An IBM salesman would be able to show potential customers how the unequaled IBM master clock correction system works.

[@juancarloscarmona5901]

Great video Alan, very interesting gadget that will be very usefull for a saleman.

[@SelfWindingClocks]

Thank you JC. Your project would make a very interesting video. I hope you will do it.

[@timlethlean5959]

Great job! So jealous too. I have a few IBM secondary clocks running in the house... but on a much-more-boring Simplex 6400 master.

[@SelfWindingClocks]

Thanks Tim, Running the secondary clocks is the important part. Glad to hear.

[@petertimefortea3502]

Hi Alan, Great video and very interesting, i have never seen one of these before thanks for sharing.

[@SelfWindingClocks]

Hi Peter, Thanks. I do like to share unique clocks. I appreciate you taking time to let me know.

[@robertcupp5528]

Fantastic video! Thanks Alan!!

[@SelfWindingClocks]

Many thanks Robert

[@ngmtk7t]

Brilliant, Alan! Very simple explanation of an otherwise complicated system. I’ll share with a few folks I know.

[@SelfWindingClocks]

You are very kind Patrick. Thank you

[@johnc8304]

Excellent presentation once again Alan! Thanks!

[@SelfWindingClocks]

Thank you John

[@Torby4096]

Interesting! This is how the IBM clocks at school in the 1960s worked? I remember each minute they would tick back one minute, then tock forward 2. I don't remember how they corrected on the hour.

[@SelfWindingClocks]

Hi Torby, I am guessing the school clocks moved back about one half a minute and then moved forward what is actually one minute. IBM had the best hourly correction method if it was ever needed. Usually was not.

[@Torby4096]

@JAlanBlooreclocks Thabks! I did not have the attention span to watch it a whole minute, but I could sit with Dad's watch and play NASA for hours. (ASD)

[@SelfWindingClocks]

@@Torby4096 Got it

[@Ticlemyemo]

Great video! Is there an email address where I can send questions about my Self Winding Clock Co. 80320 movement?

[@SelfWindingClocks]

Hi Jason, [e-mail]