£441.32

3B Scientific U8476730 Inverting Spectacle

1000895

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£441 today · usual range £367–£443 · best ever £367

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Price History & Forecast

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Last 50 days • 50 data points (No recent data available)

Historical
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£443.11 £359.27 £377.56 £395.85 £414.15 £432.44 £450.73 13 March 2026 25 March 2026 06 April 2026 18 April 2026 01 May 2026

Price Distribution

Price distribution over 50 days • 5 price levels

Days at Price
Current Price
14 days 11 days 10 days 9 days · current 6 days 0 4 7 11 14 £367 £428 £430 £441 £443 Days at Price

Price Analysis

Most common price: £367 (14 days, 28.0%)

Price range: £367 - £443

Price levels: 5 different prices over 50 days

Description

Inverting Spectacles Complete with two fully rotating inverting prisms in a shielded spectacle frame. The inverting prisms produce a lateral inversion of the rays – the world thus turns "upside down". Besides being a lucid demonstration of the functioning of an inverting prism, experiments involving inverting spectacles encourage a better understanding of the visual process and the functioning of the brain. This also enables a better understanding of the visual perception of babies. Even the apparently simplest things in life (holding and picking up objects, drawing orientating oneself in a room) become inconceivably difficult.

Key Features

Demonstration of the path of rays through an inverting prism

Drawing and writing

Seeing, picking up and balancing objects

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