Welcome to Geometricum

My collection of scientific objects


In the past few years I have built up a collection of old books and technical instruments from the 15th to 18th Century.  It's now time to sell my collection.

Scintific instruments are now for sale by this web site during 2015.

Currently for sale

Old Scientific Instruments from 15th to 18th Century

Dividers, Drawing Instruments, Surveying Instruments and others.

Sold objects are listed here

Old scientific Books from 15th to 19th Century

Practical Geometry, Surveying, Tables

Complete Book Collection is sold

Currently in auction & sale

Theodolith W&S Jones, late 18th century

A large late 18th-Century English lacquered-brass theodolite signed W. & S. JONES, 30 Holborn LONDON, the 32.5 cm long telescope with undermounted bubble level, rack and pinion adjustment to the objective and sliding focusing to the eyepiece with sliding dust-cover, mounted over the vertical half-circle, one side with a 30°-0-30° Diff. of Hypo & Base scale, the other with silvered 90°-0-90° scale and vernier with magnifier, raised on two A-frame suports with finescrew adjustment over the 16 cm diameter horizontal circle with bubble level, glazed compass with engraved windrose, engraved circumference scales 1-360° and in four quadrants, edgebar needle and clamp, raised on a threaded four-screw tripod mounting with finescrew adjustment and clamp. 28 cm high

Please make me an offer

Theodolith W&S Jones
Theodolith W&S Jones

Ricardo Auctions
Ricardo Auctions

Some Objects currently in auction (bidding ends soon) and direct sale (please contact me)