Two pics BUT what is it?

[gotrocks]

 

[magicheater]

Rotary slide rule?

 

[smstonypoint]

Thatcher calculator: www.AntiqBuyer.com Keuffel & Esser sliderule past sales archive

Steve

 

[gotrocks]

"By jove", I think you've got it.

Thanks Steve.

 

[smstonypoint]

"By jove", I think you've got it.

Just curious. Where did you find the calculator?

Steve

 

[gotrocks]

Steve, A friend's son acquired it somewhere, don't know where.

I haven't heard from him since I gave him the info you provided.

 

[ferguson123]

whats it used for?

 

[jonyyuma]

Okay, now that I looked at your auction page, I need to find my old slide-rule? Cannot remember what I paid for it.