large hopkinson Huddersfield pressure gauge. approx 10" diameter 0-200 lb per sq.in. would make a great display piece or could possibly be refurbished, tested and re-calibrated for use.
Large Hopkinson Huddersfield Brass Pressure Guage
A Large Vintage Brass Boiler Pressure Gauge, Hopkinson, Huddersfield,
LARGE 19th Century Steam Gauge Made By Hopkinson Huddersfield Gauge
