Old tool

Hi all found this in my dads old tool box.

Its a basic but very well made angle finder/copier. Made by E R Watts and sons London

There are no gradations at all but what is intrigueing about it iswhat appears to be a "spy hole" (4.0 clock in picture) that ges all the way through. This component is knurled and unscrews I presume to clean the lense.

Anybody got any ideas on this.

Regards Arthur

Hi all found this in my dads old tool chest.

Its a basic (but well made) angle finder/copier, made by E R Watts and sons of London.

There are no gradations but one interesting feature is what appears to be a "spy hole" at 4 o clock in the picture.

This component is knurled and unscrews I presume to clean the lense.

Anybody got any

info on this?

Edited By JasonB on 02/06/2020 20:28:36

Hello Arthur, the graduations are engraved onto a glass plate that is viewed through the knurled eyepiece.

It may be the the glass plate or the viewfinder is dirty, especially if it has been used near cutting fluid.

If it's of interest I can put up a picture of mine.

The company eventually became ;Hilger & Watts', a well known name in optical equipment.

Brian

Edited By Brian H on 02/06/2020 20:16:44

Edited By JasonB on 02/06/2020 20:28:50

See your other post on the same subject.

Brian

E R Watts made survey instruments amongst other things. The made our (LMB) X-Ray diffractometers under licence. Is there any evidence of bits missing? Could you give us some more veiws?

regards Martin

So a very nice protractor then

Martin

Is the correct name a 'universal bevel protractor'?

Might be worth soaking in non aggressive rust remover, there are a few products available quite cheaply.

I have a similar unit made by Zeiss and called an Optical Protractor.

Emgee

Just remembered, I already uploaded a picture of mine before.

Brian

Pictured the Zeiss optical protractor in the base accessory setting up the block at 60 degrees for machining.

Emgee

Edited By Emgee on 04/06/2020 15:01:47

Emgee, that's a nice piece of kit. Is it easy to use?

Brian

Hi Brian

Just release the clamp lever and rotate to the desired setting viewed through the aperture when holding the device up to the light. It is pretty stiff to move so it is positive when setting, no chance of it moving before the clamp is set.

I guess yours works in the same way ?

Emgee

Yes Emgee, just the same, and the screw at the lower left of the picture locks the whole thing in position. I don't use it often, it just seemed a shame to throw it in the scrap bin.

Brian