The F.W. Allen & Co Model M. 70/40 is a visual inspection lamp designed for detailed inspection tasks in various industrial or laboratory settings. 

It operates on 220/240 volts and uses a 20-watt sparlamp. 

The base is sturdy and heavy to provide stability. 

This model is manufactured in Britain and is part of the high-quality visual inspection equipment line offered by F.W. Allen & Co.