🔴 ARISTO 929 PROFESSIONAL large slide rule with vintage case

📏 ARISTO 929 Professional Slide Rule – Large 33.5 cm Format

Tabletop technical instrument – ​​complete with original hard case with logo

One of the most complete and impressive slide rules of German production: ARISTO model 929, intended for engineers, technical studios and advanced calculation professionals.

Complete system of logarithmic, inverse and trigonometric scientific scales, with an increased length of 33.5 cm for superior reading precision.

⚙️ Featuring a glass slider with a metal frame, a smooth system, and a wide visual layout. Packaged in its original gray hard cardboard case with a heat-stamped ARISTO logo.

🔧 Technical features

📏 Overall length: 33.5 cm (13.19 in)

🔳 Material: White plastic with rigid metal and glass slider

🧮 Scales: Technical system with D, DI, A, B, C, S, T, ST, P and inverse scales

🧷 Model: ARISTO No. 929 – clear marking on body

👜 Original case: grey hard case with embossed red logo

🏢 Manufacturer: Aristo – Dennert & Pape, Hamburg, Germany

🕰️ Era: 1960s

🔍 Conservative condition as per photo – light wear on the case, cursor works, scale is legible and intact

📦 Complete, authentic, extra-long desk size item

📖 An era when numbers flowed on glass and paper: The 929 model was one of the most prestigious in the Aristo range, used in manual computing centers and high-precision technical offices.

Today it is a cult object among collectors of vintage scientific instruments and lovers of pre-digital culture.

🎖️We've been a top-rated seller on eBay for years, with over 2,400 fully satisfied customers who have chosen our store for quality, care, and authenticity. Every item we offer is carefully selected, photographed, and described with expertise and passion.