A USED Prismatic marching compass by STANLEY London, with the serial no stamped on it 
This is one of the units produced with the disc calibrated in mills which is still in good condition and readable with the naked eye, prism is clear and functions.
There is a bubbles in the internal liquid but the units are easily topped up via the filler hole. The bubble is about the size of a garden pea and does not stop or affect the way the unit works
The bezel ring rotates freely once the clamp is released
The  unit is in good working order.---

THE PHOTOS ARE NOW LIBRARY STOCK PHOTOS.  

THE PHOTOS SHOWING THE OUTER GLASS SHOW IT WITH A COVERING OF DUST, IT WIPED OFF AND IS CLEAN AND CLEAR

Insured post & packing will be £14.50 via 24 hour courier service for UK MAINLAND, this price excludes the highlands and islands of Scotland, Ireland north and south and all other areas that attract a postcode surcharge