Vintage Lightning Calculator SB-6 Sampling Box - random sampling device

Description

Vintage Lightning Calculator SB-6 Sampling Box
The age of the sampling device is uncertain.  It was used at a local state university for years.  This model is still produced and is still available for retail purchases for a cost of 0 plus shipping.  The current retail models are encased in a dark plastic frame, where as this vintage one comes in an attractive real wooden oak frame.
Please see the
VIDEO
to see more details and to see it in use.  It is in excellent vintage condition and is fully functional.
Trusted Seller Since 1999
SB-6 Sampling Box Description
The Sampling Box is designed for trainers who need a sampling device that is easily transported. The SB-6 box contains beads in seven different colors. By using various color combinations any percent (from ½ to 20½ %) defective can be sampled. Samples are drawn by turning the box face down and pressing the lever allowing the beads to fall into the openings on the face. The beads will remain in place until the lever is pressed again to release the sample. The front face of the SB-6 Box has sampling patterns consisting of 25 and 75 holes while the back face has 20 and 30 holes. The SB-6 contains 2000 beads and measures 9¼" x 7¼" x 2½".
Vintage Lightning Calculator Sampling Box SB-6 - YouTube
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