I have used auto darkening ones for many years and my current one has two adjustments on it, one for delay and other to adjust the darkening. I would never go back to the old type.
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Richard
1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2
Member of MVT, IMPS, MVG of NSW, KVE and AMVCS
KVE President & KVE News Editor
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