![Red Card :redcard:](./images/smilies/redcard.gif)
It is labelled "Long & Short Distance measuring Kit" made by H.B.Selby & Co centurys ago
![Whistle :whistle:](./images/smilies/eusa_whistle.gif)
It has a pin-hole in one end with slides and mirrors wrapped up in greaseproof paper.
I suspect it operates something like a crude sextant, but no idea,
Has anyone else got one with instructions, I would love a copy
![Crazy :crazy:](./images/smilies/crazy.gif)