@Sneezy50783211 Says whom? (That prompted a music thing with Bonnie Tyler and _Total Eclipse of the Heart_ ... "sitting on a powder-keg and giving off sparks... ")
Draper Feeler Gauge Metric | Toolstation

100mm long taper blades. Carries sizes from 0.05 to 0.8mm. Each blade is marked with its size and folds into a plated steel case. Metric: 0.05, 0.10, 0.15, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70, and 0.80mm

Toolstation
@JdeBP @Sneezy50783211 It is entirely possible, that these are not what are required πŸ™‚
@bytebro @JdeBP I’m thinking hopefully not!