![img_17-3.jpg](https://gazette-eu-west2.azureedge.net/media/75906/img_17-3.jpg?width=750&height=500&mode=max&updated=01%2f24%2f2022+13%3a05%3a56)
The Antony Cribb sale in Oxfordshire on November 9 produced two.
A Manton-type flintlock powder tester sold for £660. In the days when gunpowder manufacture was far from standardised, this handy method of assessing the actual force of a known charge was a big step towards consistent accuracy.
Pictured above is a late 16th or early 17th century German wheel-lock spanner which sold to an online bidder at £90.
Without a spanner to wind the mechanism which rotated the serrated wheel against the sparking flint such weapons were useless, yet few wheel-locks are now to be found with their original keys.