I have found a photo of the former synagogue
www.stevebulman.f9.co.uk/churches/images/kent/gravesend/syn.jpg.

It says "off Windmill St. 177 TQ 647 734" That would be the OS Grid
Reference.

This is the location

http://www.multimap.com/map/browse.cgi?client=public&GridE=0.36928&GridN=51.44168&lon=0.36928&lat=51.44168&place=Windmill+Street,+DA12,+GRAVESEND&db=GB&scale=5000&search_result=Windmill%20Street%2C%20DA12%2C%20GRAVESEND&lang=&db=GB&keepicon=true

Nick Landau
London, UK

COHNREICH (Anklam, Germany Krajenka, Poland) ATLAS (Wielkie Oczy (near
Lvov/Lemberg), Poland) WEITZMAN (Cracow), WECHSLER(Schwabach, Germany)
KOHN/WEISSKOPF (Wallerstein and Kleinerdlingen,Germany) LANDAU (only adopted
on leaving Belarus or later)/FREDKIN (?) (Gomel, Mogilev, Chernigov,
Belarus)