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Titolo |
The whole art of reflex dialling [[electronic resource] ] : shevving the vvay to make all manner of dials which shall shew the houre by a spot of light reflected from a glasse upon any cieling whether it be flat or curved, or any other way irregular. As also upon any other object whatsoever, and whether the glasse be plain, or convex, as likewise whether it lie in the plain of the horizon, or oblique unto it. Together with all necessary furniture belonging thereunto. All performed by an easie instrument fitted, with lines to that purpose. Published by Anthony Thompson |
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