Bruning 2401* 5in Slide Rule and Leather Case F*S Gilllette Razor This is a rubberized C90

This is a rubberized C90 ota with the original set screw for the

UV and Y48 (yellow)

It is fitted with a high-voltage transformer to create a glow discharge

1 mm on a 135 mm x 150 mm stage

Note the vest is an open front

Bruning 2401* 5in Slide Rule and Leather Case F*S Gilllette Razor This is a rubberized C90Bruning 2401 5in Slide Rule and Leather Case Really neat and very practical 1960s 5 inch plastic rule #2401 Simplex With Bruning Leather Slipcase. 5" scale, with 6" total length. Scales on both sides of the center post. Front Scale 12. 5cm A [ B, CI, C ] D, K \\ 5in Back Scale: [S, L, T ] Leather slipcase is unmarked, Made in the USA FREE standard shipping to the 48 contiguous United States