This optical bench one meter long is an ideal bench for introductory optics investigations and a good upgrade to our basic optics meter rule bench fitted on two moulded supports with leveling  screws. It comprises of a square section aluminium tube which is graduated on one side allowing easy reading when the riders move on the bench. Each rider has a fine index mark which allows for precise readings to be noted. This economy bench comes with four sliders ,two sliders allow lateral motion while the other two are fixed. Supplied with compatible accessories. Accessories include 1 lens holder, 1 slit holder, 2 object needle .