Both the slide rule and case are in excellent vintage gently used condition!
The only flaws are that the slide rule has a persons Initials and name etched very small on the front at each end. The name is also written in black marker just inside the end of the case.
This model is constructed from plastic with a clear plastic indicator (cursor).
Intended to teach fundamental mathematical operations before students moved on to more complex professional-grade rules.
It can perform a variety of mathematical operations including multiplication, division, logarithms, square and cube roots, and trigonometric functions. The Model 120 features K, A, B, S Cos, T Cot, CI, C, D, and L scales.
Shipping is available to anyone not local.
This item is listed on multiple sites.
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