Vintage 1958-59 Pickett 1010-ES Slide Rule with Leather Case Trigonometry HTF This Model seems to be more difficult to find This is the 1010-ES Model This is not to be confused with the later model N1010-ES--the difference here is that the 1010-ES has the L scale on the bottom right side while the later model N1010-ES has the L scale on the Top right side. 1950s Pickett Slide Rule Model 1010-ES with Leather Case Vintage Ruler Description: Nice Pickett all metal slide rule, model 1010-ES with leather Pickett case. Condition: Missing 1 screws and small, still works well. Otherwise minor wear in finish. Leather case in nice condition but does have some writing on it and some water/liquid type staining yet is still soft and supple. Great slide rule for a great price.. Approx. Measurements: 12 1/8" Made in: USA Color: Yellow Trig, ubiquitous among high-school and college students for use in math and science. Slide rules were used for multiplication and division as well as roots, logarithms and trigonometry PLEASE REFER TO ALL PHOTOS FOR A BETTER VISUAL DESCRIPTION OF THE ITEM All of My Items Come from a Smoke Free Home I Strive to Ship Next Day Feel Free to Look Through My Other Listings Please Contact me with any issues prior to leaving negative/neutral Feedback or low detail ratings as I will always do my best to solve any problems that may come up! Please refer to all photos above for a better visual description of the product being offered and it's condition. If you have any further questions please feel free to message me Any props that are used in the taking of the photos are not included, only the item/items in the title of the listings are being sold