ID: 
2352
Maker's Name: 
Pickett & Eckel Inc., Alhambra, Calif.
Where made: 
USA
Dimensions: 
15.5 × 4 × 1 cm

Pocket slide rule made of magnesium alloy, with the scales printed on. They are:

LL1,A,(B,T,S,C),D,LL2 / LL3,DF,(CF,C1F,C1,C),D,L

The log log scales are used to raise any number to any power, and the 'pi-folded' scales allow rapid multiplication and division by pi.

 

The makers claimed that a similar model was used on five Apollo missions.