|Date/Report Number ..12012010.LC-U78U72 Item: s 1960 RUSSIAN CIRCULAR LOGARITHMIC SLIDE RULE CALCULATOR|
|Description of item VINTAGE
1960 RUSSIAN CIRCULAR LOGARITHMIC SLIDE RULE CALCULATOR IS 35 X 41 MM.
CONDITION WATCH EXCELLENT FOR Advanced mathematical operations:
multiplication; squaring; division; finding of trigonometric functions of a sine;
extraction of a square root; finding of trigonometric functions of a tangent; Finding
inverse trigonometric functions; calculation of the area of a circle, etc. 50 x 13.3 MM.
THIS CIRCULAR SLIDE RULE OPERATES PERFECTLY. THE PATINA DIALS ARE NEAR MINT.
CONDITION EXCELLENT TO MINT.
Estimated Retail Replacement Value $399.00
|Reports are supplied at the request of the customer and it is for the customer's exclusive use. Reports express an opinion of the time of the examination of the jewelry. This report is for customers use only for the following two purposes, indicating estimated retail replacement value to obtain insurance coverage, or for the purpose of providing geological information. goldsmith Works does not guarantee that the appraisal valuation will result in a sale at the price. Estimated retail replacement value is arrived after analyses of what the approximate high retail cash asking price is for labor, materials, and design. These prices may be substantially higher than actual transaction or warranty with regards to any item described in the report, since jewelry grading is not an exact science, this report represent the best opinion of the company. GoldSmith Works is in no case responsible for differences that occur by repeated grading by other experts in the field and/or use of other standards, norms, methods or criteria other than those used by GoldSmith Works. GoldSmith Works is expressly held harmless by customers including, but with out limitation for any claims or actions that may arise out of negligence in connection with the preparation of this laboratory report, or actions based upon the customer's use of the report. The information on the carat weight, clarity grade, color grade on the report is approximate due to the limitations in jewelry grading. The item was tested, graded, and examined under 10x magnification using the techniques and equipment available to GoldSmith Works, including fully corrected triplet loupe, binocular microscope, master color comparison guides, diamond color comparison tools, electronic carat balance, non-contact optical measuring device, and ancillary instruments necessary at the time of Exam|
A Russian circular slide rule built like a pocket
that works as single cursor slide rule since the two
needles are ganged together.
RUSSIAN CIRCULAR SLIDE RULE
The circular slide rule consists of:
2 pointers (which revolve in unison with the
SIDE 1 : 3 scales on the fixed dial.
SIDE 2: 2 scales on the moveable dial.