B-3s & 7s & 8s & 9s
Tig21er-Great information above.I have never seen this!Was it a page in Elux News?Maybe 78-80??-(The explanation of the B-8 belt compared with the later,smaller 2101 with metal motor shaft driving 3 plastic gears is just one reason the 'big brother' was better.)
Solution ratio-Was no need to write on tank as B-8 & 9 had markings on tank and cap was a measuring cup.