Norstedts physique scale Demonstration Science Set ESA Vintage 1960s

H. Tinsley & Co. Ltd Rotating Field Demonstration Model Type 4341

Vintage Ball and Ring Thermal Expansion Demonstration Set Gravesande's

Vintage Shinco Ball and Ring Thermal Expansion Demonstration Set

Vintage BRITISH THORNTONS AD-050 LOG LOG CASED SLICE RULE VGC

Vintage Ball and Ring Thermal Expansion Demonstration Set Brass & Wooden Handle

Vintage Geometry Equipment Used But Good

Vintage British Thornton Slide Rule No. P271 Log Log with case 1968