The Sunlight Calculator (1875)

SunCalc measures the amount of accumulated sunlight that falls on a specific garden location. The patented electronic process provides the ability to match a plant's light requirements (full, partial sun, partial shade, or shade) with the actual sunlight conditions. Most gardeners contend with a series of micro-climates (relative to sunlight) on their property. The path of the sun, the effects of shade trees, shadows produced by the house, outbuildings, fences, etc. all contribute to varied amount of available sunlight. By using the SunCalc gardeners can accurately measure the amount of photosynthetically active light in a specific location.