Lot 174
174
A brass pantograph by Troughton London; a 'Sykes' hydrometer in case; a MHR1 HOHENRECHENSCHIEBER calculator in case; and The Wedge Optical Pyrometer in case (4)

Details
A brass pantograph by Troughton London; a 'Sykes' hydrometer in case; a MHR1 HOHENRECHENSCHIEBER calculator in case; and The Wedge Optical Pyrometer in case (4)

More from Tools, and Scientific Instruments.

View All
View All