Dietzgen Co 1667BP Triangle Ruler & Alvin No. 241 with Cases Two nice vintage engineering triangular rulers Shipments whenever possible will be made within one business day. Payment must be made v

 

Here's a working model (roughly 6" plastic) Astrolabe, complete with a 35-page softcover book, The Astrolabe by Harold N. Saunders, B.Sc, A.R.I.C., (c) 1971. The book offers the history and constructi

 

You are bidding on a vintage like new ALVIN 1150 ELITE DECILOG TRIG LOG LOG SLIDE RULE. Includes leather case, original box and instructions.

 

Up for auction is a Hoffritz made in Germany weather barometer . It is 5" round 2 1/2" thick. . It is in great condition. Thanks for looking, happy bidding and have a great summer!!!!!!!!

 

Sans & StreiffeThis auction is for a Sans & Streiffe No. 310 Bamboo Slide Rule w/Case, Box, and ManualIt is in excellent gently used condition. The manual cover is torn and box has wear.No.310

 

3 vintage slide rules: 1. The Warner & Swasey Co., Cleveland Ohio. 2. Acumat Acu Math no. 600. 3. K +E #681210 Log.Log Duplex Decitrig c. 1947 by Keuffel & Esser Co. Winning USA bidder pays pr

 

You are bidding on an awesome lot of 33 new twist Lipitor glow in the dark logo Black Ball Point Pens. They have a nice heavy feel to them. They are blue plastic with metal on both ends. See Pictures.

 

This is the famous plastic blue bowl gravity concentrator designed to work forever with no moving parts. Comes with water flow control valve & the supports to place it on your bucket. You can also

 

This is a pair of antique brass framed extending spectacles / sun glasses with folding arms and they date to around the late 1890's - early 1900's. The spectacles measure 5 1/4 inches across the front

 

This is a vintage telescope related sales flyer, one side features the "ASKO," and the reverse is an order form from an optics company, measures 8 1/2" x 11", one page, and is undated but vintage. Con