Great pics of the incredible variations in these items! I seriously had no idea so mary types existed! I had never seen that example with the two square ends with chain. Considering the vast differences in type and the use of these expanding over close to 3 centuries, I'm assuming they must have been quite effective to still be present up until the mid/late 19th century. Thank you for posting these and it has definitely expanding my knowledge. Now I want to go out and find more!