Hello CyberJack, It's given me massive joy and endless fascination to the extent it's made me glad to have been born. Here is one I got recently and installed in earnest to my trusty Laser. I just can't help myself. It's an obsession -or a disease. The second pic is one made in 1978 I got on Gumtree recently and applied clear to the Hubodometer crystal to make it extra clear to see though. Looks great.

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IMG_20200203_202323-1000x563.jpg (54.5 KB, 122 downloads)
IMG_20200131_223423-1000x563.jpg (63.65 KB, 121 downloads)

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!