Knoxville (865) 558-3033 • Nashville (615) 812-6096 • info@caseantiques.com

Case Auctions
Live Auction

2022 Fall Fine Art & Interiors

Sat, Oct 8, 2022 09:00AM EDT
Lot 557

2 Circular Slide Rules, incl. Eckel Engineer's & RotaRule 510

Estimate: $400 - $450

Bid Increments

Price Bid Increment
$0 $10
$100 $25
$500 $50
$1,000 $100
$3,000 $200
$5,000 $500
$10,000 $1,000
$20,000 $2,000
$50,000 $5,000
$100,000 $10,000
1st item: Eckel Dial-O-Matic Engineer's or Engineer's Log Log slide rule, manufactured by Lithocalculator Company, Arcadia, California, circa 1955. Comprised of two celluloid-coated aluminum disks, one on top of the other, with a clear plastic cursor, the end piece held together with a metal screw. Includes an instruction manual for the Layman's model with additional insert for the Engineer's model, and a brown plastic case. Slide rule: 7 1/2" dia (includes cursor). 2nd item: RotaRule Model 510 50" pocket size circular slide rule, manufactured by Boykin Products Company, Ruxton, Maryland, circa 1963. Comprised of double-sided white plastic with a clear plastic cursor with a white plastic end piece held together with metal screws. Includes brown leather case, instruction manual, a Rota Rule parts lists, and a miniature screwdriver, with original box. Slide rule: 6" dia (includes cursor). Box: 8 3/4" H x 6 1/4" W x 1 1/4" D.

Condition

Slide rules in overall very good condition with expected surface wear. Boxes, cases, instruction manuals with minor tears, dampstaining, general wear to be expected from age and manner of use.

Available payment options

  • Visa
  • Mastercard
  • Amex
  • Diners
  • Discover
  • JCB
  • Union Pay

Payment must be received no later than five (5) days after the sale.


If paying with a credit card, a 3% credit card processing fee will be applied to the final sales price (i.e. hammer price + buyer's premium + applicable taxes). If you have a credit card on file with Case, any winning bids will be automatically charged (up to $3000) along with applicable fees 72 hours after you receive your invoice unless other arrangements have been made.


If paying with wire transfer, please use the following information:
Bank: Pinnacle Bank
150 Third Avenue South, Suite 900
Nashville, TN 37201
Phone # (865) 766-3000
Swift Code: PNFPUS44
Routing, Transit, ABA: 064008637
Beneficiary: Case Antiques, Inc.
4310 Papermill Drive
Knoxville, TN 37909
Account #: NOT DISCLOSED (please refer to your invoice email for the Deposit Account Number or contact us )

The UPS Store of Bearden 865-584-0081 (press 5), fax 865-584-0094 store2630@theupsstore.com Click to get a quote

The UPS Store of Northshore Knoxville Contact – Eve 865-951-2499 store6461@theupsstore.com

John & Max Express LLC NOTE: large items & white glove delivery services only (driving range limitations may apply) Contact – Dina 865-230-1568 johnmaxexpress@gmail.com