A 7lb portable inspector's balance, County of Birkenhead. Used by weights-and-measures inspectors to verify trader's weights and pre-packaged goods.

The balance proper of the 7lb inspector's kit.

A small portable inspector's balance. 1/2 ounce capacity, Nottingham County Council. Same use as above.

The 1/2 oz balance assembled.

Model SD12. Stanton made balances much higher capacity, too (at least up to 56 lbs). This is a 10 kg mass comparator, optically resolving to 1 mg, air-damped and weight-loaded up to 200 g. Still in use today.

The beam of the SD12. 

A special which appeared on Ebay. Most features along the "A" model series, but only one damping pot on the r/h side.

The beam of this special, with it's sole damping pot. Note that even the support bracket on the l/h side is missing.

A recording balance. Based on a standard analytical design it electronically records any change in weight of the sample on the pan. The box on top of the case contains the electronics (an early version of a servo system) and the chart recorder which logs the weight changes.

The beam and inner workings of the Stanton recording balance.

Model 761 Stanton-Redcroft Thermogravimetric Analyser, which appeared on Ebay. Note the balance beam (somewhat tilted) inside the glass vessel.

The electronics box and chart recorder of the Stanton recording balance.

Pictures of a 56 lb inspector's balance by Stanton (Borough of Boston) including transportation box. Many thanks to Vasilis Manolis from Greece.