A decade after the original model was made by George Adams Sr., this simplified version was probably made for two reasons: cost and simplicity.
Once the oval eccentricity of the lathe was invented, these little naturalist field microscopes could have been constructed for pennies (the case, now absent would have cost more than the instrument). Standing a mere 8 cm. tall, it has a square pillar, friction fit focussing, two interchangeable lenses (later models had three) and a round stage
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