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Re: Peculiar box sextant
From: Luc Van den Borre
Date: 2022 Sep 21, 12:43 +0200
From: Luc Van den Borre
Date: 2022 Sep 21, 12:43 +0200
On 21/09/2022 02:30, Geoff Hitchcox wrote: > It was fun tracking it down, and I found the manual (attached below). This is very interesting. Now we can get to the bottom of how this 0-180 gadget works. The manual succinctly explains the instrument can be used with daylight or light from a glowbulb. This may result in color fringing along the line to be measured. The 'compensator' can be turned to reduce the fringing and get a sharp line (page 5, 'Messung'). Attached is an image of the inside of the instrument (from a current eBay auction). You can see the gears to turn the compensator on the bronze assembly. Luc
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