Caliper Slide Rule Watch

The ‘Caliper Slide View’ combines a swiss quartz watch with an icon of pre-electronic technology: the slide rule.

Like our other watches, it’s a design inspired by mid-twentieth century technical instruments; the precision tools that scientists and engineers relied on before electronics became ubiquitous. 

Every watch includes a 3 inch (8 cm) circular steel slide rule. To ensure you can make the best use of both slide rules, we’re including instructions. After all, using a slide rule has become a lost art.

A circular steel slide rule is included with each watch

Technical Specs

  • Case milled from 316L steel  
  • Black surface applied as ion plating (IP)
  • Sapphire scratch resistant glass  
  • Glass on back of case  
  • Semi-transparent watch face 
  • Case diameter 43mm  
  • Case thickness 13mm  
  • Water resistant to 10 ATM (100m)  
  • Screw down crowns
  • Miyota 82S0 movement  
  • Manual and self-winding  
  • 21 Jewels  
  • 21,600 vibrations per hour  
  • 40+ hours of running time


The A1O features a black case and black interior slide rule with a dark, semi transparent watch face and an orange second hand:

Version B3O features a brushed stainless steel case and band. The face is a crisp opaque white face with black markers.

Version B4O features a brushed stainless steel case and band. The face is a transparent face with black markers.