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The 250mm diameter ball is a good size and is in proportion with all the rest of the instrument's construction.
This model now uses an insulation tube to protect the belt, but the pulleys, the belt and the combs are accessible for inspection, cleaning or adjustment at both the top and bottom ends of the tube. The belt is a long-lasting Silicone rubber and both performance and reliability are excellent.
The whole instrument can easily be dismantled down to the components to reduce size for transport. The drive unit can be removed easily for return to IEC should repair be required but the whole instrument is not required to be sent. This is a big saving on freight.
