Other then the damage to the 1 rev per second wheel it looks like will not take much to clean up. My corrent idea is to start off with making a replacement on a laser printer and once I'm comfortable with how it looks have a few scales made on photographic paper. One discount retailer here in the US, Costco will do 8x10" prints from .jpg files for $1.50 USD each. Cheap enough to experiment.
The 116AR although totally impractical will still be fun to bring back to life, but will be some time. Will need to find a manual first. -pete On Mon, Mar 12, 2012 at 9:20 AM, John Howell <[email protected]> wrote: > I'll second that Rob! > > I have the HP 115BR and, what I believe to be a British version made for the > Royal Navy by McMichael. Pictured here: > > http://www.flickr.com/photos/75ohm/6829984174/ > and here > http://www.flickr.com/photos/75ohm/6976111697/ > > Called a 'Clock Direct Reading' & carrying NSN 6645-99-972-5270 this > incredibly well made device requires a 100KHz input which is divided to 1KHz. > This powers a Muirhead motor with an armature speed of 10,000 RPM. This is > then geared down to drive a mechanical digital readout. The display can be > advanced or retarded using a handwheel which operates a differential gear in > the drivetrain. There is a 'pips' output which is 100mS of 1KHz every second. > > I would be most interested to hear from anyone with information about this > device, how and where it was used, circuitry etc. > > John Howell (in the UK). > > > On 12 Mar 2012, at 10:36, Rob Kimberley wrote: > >> Lovely stuff!! >> Rob >> >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] On >> Behalf Of Pete Lancashire >> Sent: 11 March 2012 17:56 >> To: Discussion of precise time and frequency measurement >> Subject: [time-nuts] Three HP oldies >> >> 101A >> https://plus.google.com/u/0/photos/111617808980322733757/albums/571869450289 >> 0226481 >> >> 115CR >> https://plus.google.com/u/0/photos/111617808980322733757/albums/571869789245 >> 1866241 >> >> 116AR >> https://plus.google.com/u/0/photos/111617808980322733757/albums/571869946252 >> 1152657 >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
