Mason's Hygrometer with Wet and Dry Bulb, Wall-Mounted Material_Muslin Adjustable locking hook positions items

Adjustable locking hook positions items 110 mm from the support rod on this suspension clamp

Used to supply rechargeable DC power for circuit experiments

and iron rods at 150 by 3mm mounted along a hot-water tank

this two-gap Wheatstone bridge is the standard student apparatus for resistance comparison and verification

measuring atmospheric pressure via a fluid column mounted on a single-piece frame

Mason's Hygrometer with Wet and Dry Bulb, Wall-Mounted Material_Muslin Adjustable locking hook positions itemsWall mounted Mason's hygrometer with two identical dual scale thermometers one dry and one kept wet via a water reservoir calculating relative humidity from their paired reading difference.