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Hi everyone. My dad was a model engineer subscriber, enthusiast and retired design engineer. Sadly he past away in January this year. He eft all of his possessions to my mum. She's asked me to help clear out his workshop but we're really worried about under-valuing some his stuff and don't want people just to try and buy cheap to sell on and profit from the situation. Happy for it to go for really reasonable prices, but want the equipment to go to good homes and people who will make good use of it and continue to create amazing things. The problem is we haven't got a clue what most of the stu...

Basically if the start, end, and increments are known, it's possible to 'lose' the accumulated error by varying each increment slightly. Say the closest round number to the wanted angle is 211 steps, but this accumulates an error. An algorithm can be applied to distribute the big final error en-route as a series of small errors by stepping a sequence like: 211, 211, 210, 211, 211, 211, 211, 211, 210 ... (No logic in the example, just an illustration.) Several different algorithms available. Could be as crude as keeping count of the error so far and skipping or adding steps when a threshold is...