I'll get those photo's up, and mesure the blades tonight Grumpy, but by memory, they are pretty thin, I wouldnt think more than 5/64.
Darryl, this little blurb (Wikipedia) sums it up fairly well in my mind:
Rotary mowers were not developed until engines were small enough and powerful enough to run the blades at a high speed. Many people experimented with rotary blades in the late 1920s and early 1930s, and Power Specialties Ltd. introduced a gasoline-powered rotary mower. Kut Kwick replaced the saw blade of the “Pulp Saw” with a double-edged blade and a cutter deck, converting the “Pulp Saw” into the first ever out-front rotary mower.[6] One company that produced rotary mowers commercially was the Australian Victa company, starting in 1952: these mowers were lighter and easier to use than the mowers that came before. The first Victa mowers were made at Mortlake (Sydney) by local resident Mervyn Victor Richardson. He made the first out of scrap in his garage and then moved to a shed behind St Mary's Church of England, where the first Victa mowers were manufactured and went on sale on 20 September 1952. The new company, Victa Lawnmowers Pty Ltd, was incorporated on 13 February 1953. The venture was so successful that by 1958 the company moved to much larger premises in Parramatta Road, Concord and then to Milperra.[7] Two Victa mowers, from 1958 and 1968 respectively, are held in the collection of the National Museum of Australia.[8] The Victa mower is regarded as something of an Australian icon, appearing en masse at the opening of the Sydney Olympic Games in 2000.
The early 1930's rotary mower made by Power Specialities, was the first Rotoscythe (not mine) Power Specialities made rotoscythe's up till the late 50's I beleive.
