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Watch with slide rule

 prices on 20 models  

Logarithmic ruler

— built-in mechanical calculator for some simple mathematical calculations, primarily multiplication and division. This device can be useful, in particular, for calculating travel time, fuel consumption, transferring money from one currency to another, etc. In hours, a slide rule usually consists of two rings with divisions (hence the second name for this function is a calculator ring ). One of these rings is motionless, and the second rotates freely; combining the marks on both scales according to certain rules, the user gets the desired result. Note that the slide rule is not as accurate as an electronic calculator and is more difficult to handle; on the other hand, with a minimum skill, elementary calculations on it can be carried out much faster than on the same calculator.
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Wrist Watch Citizen CB5860-86E
quartz, watch body stainless steel, solar battery, world time, strap: steel bracelet, Japan

Wrist Watch Victorinox 241886
mechanical, self-winding, watch body stainless steel, movement with stones, open case back, strap: leather strap, Switzerland

Wrist Watch Citizen Navihawk A.T JY8030-83E
quartz, watch body stainless steel, solar battery, compass, world time, strap: milanese bracelet, Japan

Wrist Watch Casio Edifice EF-527D-3A
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quartz, watch body stainless steel, strap: steel bracelet, Japan

Wrist Watch Citizen AT8020-54L
quartz, watch body stainless steel, solar battery, world time, strap: steel bracelet, Japan

Wrist Watch Victorinox 241887
mechanical, self-winding, watch body stainless steel, movement with stones, open case back, strap: leather strap, Switzerland

Wrist Watch Citizen Promaster Skyhawk JY8149-05E
quartz, watch body stainless steel, solar battery, world time, strap: leather strap, Japan

Wrist Watch Hugo Boss Pilot Edition Chrono 1513850
quartz, watch body stainless steel, strap: steel bracelet, Germany

Wrist Watch Citizen Promaster Skyhawk A-T JY8127-59E
quartz, watch body stainless steel, solar battery, world time, strap: steel bracelet, Japan

Wrist Watch Citizen Promaster CB5001-57E
quartz, watch body stainless steel, solar battery, world time, strap: steel bracelet, Japan

Wrist Watch Citizen Promaster Sky JY8146-54E
quartz, watch body stainless steel, solar battery, world time, strap: steel bracelet, Japan

Wrist Watch Rotary Henley GB05235/04
quartz, watch body stainless steel, strap: milanese bracelet, Switzerland

Wrist Watch Hugo Boss Pilot Edition Chrono 1513853
quartz, watch body stainless steel, strap: leather strap, Germany

Wrist Watch Hugo Boss Pilot Edition Chrono 1513851
quartz, watch body stainless steel, strap: leather strap, Germany

Wrist Watch Citizen Red Arrows Limited Edition Skyhawk A.T JY8087-51E
quartz, watch body stainless steel, solar battery, world time, strap: steel bracelet, Japan

Wrist Watch Hamilton Khaki Aviation Converter H76625530
mechanical, self-winding, watch body stainless steel, movement with stones, open case back, strap: leather strap, Switzerland

Wrist Watch NAUTICA NAPP39F08
quartz, watch body stainless steel, strap: rubber strap, USA

Wrist Watch Victorinox 241888
mechanical, self-winding, watch body stainless steel, movement with stones, open case back, strap: steel bracelet, Switzerland

Wrist Watch Seiko SSC425P1
quartz, watch body stainless steel, solar battery, strap: leather strap, Japan

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