Proportional divider by Charles Smith

A Brass and Iron Proportional divider by Charles Smith (Clerkenwell) Ltd., London. In original box, lenght 25 cm. Proportional divider by Charles Smith

William Oughtred - Wikipedia

Effect of simultaneous testing of two mice in the tail suspension test and forced swim test

Calculation, Measuring & Drawing instruments - Van Leest Antiques

ANTIQUE / VINTAGE PROPORTIONAL DIVIDERS – LONDON MADE - BRASS IN ORIGINAL CASE

Lattice-Boltzmann Simulation with 1-into-2-into-4 testcase with

Victorian Drawing Instrument Set by Elliott Brothers London - Owned by Sir Hay Frederick Donaldson KCB – Jason Clarke Antiques

Proportional divider by Charles Smith

Proportional divider by Charles Smith

Model Railroader 1953-07

Scientific instruments - Page 2 of 10 - Van Leest Antiques

Alcohol meter van Dujardin-Salleron. - Van Leest Antiques

Maritime and Scientific Models, Instruments & Art (Gloriana) by Charles Miller Ltd - Issuu

VIRTUAL WALL SKETCH PAD: 1-point perspective grid design allows for drawing realistic room interiors and layouts, as well as architectural landscapes

Koala Tools | Drawing Perspective (1 and 2-Point) Large Sketch Pad (2 Point - 11 x 17)