Instrumentum specializes in high quality 17th and 18th century scientific instruments for architecture, mathematics and navigation. We have collected antique instruments for over 20 years with a focus on early and rare European architectural drafting sets, dividers, and rules. If you are interested in something particular please contact us at instrumentuminfo@gmail.com. Image galleries of our inventory can be viewed on Pinterest and Facebook at the following links: https://www.pinterest.com/InstrumentumAntiques/instrumentum-antiques/ https://www.facebook.com/AntiqueScience/