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FM-2440 Siphon Barometer A low cost, simple barometer yet having sufficient accuracy. The whole column of mercury is clearly visible in the glass tube. The barometer scale is graduated in both English and Metric systems. Vertical sliding zero-point adjustment is carried by a screw clamp attached to the glass tube. Complete apparatus ..

FM-2449 Siphon Barometer (Toricelli)Wall model, barometer mounted on the unbreakable, non-bendable plastic baseboard of size 93×10cm (Height × Width). Consists of a clear glass Toricelli tube with a U-bend at the lower end leading to the mercury reservoir. The reservoir has a screw cap at the top, the thread's gap being sufficient to..