Slide rules HOME page COLLECTION NON-STANDARD RULES
Make Fowler, Manchester, UK
Model Long-scale
Notes
1. In original leather case.
2. A copy of the instructions can be found here.
3. On the front face there is a "long" scale, over several circles, and a "short" scale, the outer circle only.
4. On the rear there is another short scale and trig and log scales.

Front view
0004-fowler01.jpg (19238 bytes)

Back view
0004-fowler02.jpg (20620 bytes)

Detail - showing long scale
0004-fowler03.jpg (31997 bytes)

Detail - showing trig and log scales
0004-fowler04.jpg (22918 bytes)

 

 

Manufacturing date 1954 (date on slip of paper in box)
Length Circular
Material  
Scales Front face: "short-scale" and "long-scale" logarithmic.
Rear face: "short-scale", reciprocals, square roots, sin, tan, sin/tan
Documentation Original documentation but damaged along fold lines.
Condition Very good.