Research Optical Bench
Product Details:
Research optical bench 
(physilab research optical bench model)
The bed is heavy cast iron with a strong control rib, throughly seasoned and aged before machining and griding of its upper surfaces. Total length 170cm. With a machined full length platform for the scale. The scale is from lifetime stainless steel fitted on its machined platform on the bed,divided in mms to a length of 170cm. Accuracy of calibration 0. 01%
Lythe type 170cm long with accessories, assembly 4 riders slit.