GUINEA AND FEATHER APPARATUS
A hard glass tube 650mm length x 25mm dia unevaluated fittedwith stopcock to screw into air pump plate, supplied with a small coin andafeather.
A hard glass tube 650mm length x 25mm dia unevaluated fittedwith stopcock to screw into air pump plate, supplied with a small coin andafeather.
Full Specifications:




