360 degree protractor
360 Degree Brass Protractor
Brass protractor by Davis & Son.  Size 20cms diameter Item: TH10
£60.00
Negetti & Zambra Barometer & Thermometer
Banjo Barometer & Thermometer
By Negetti & Zambra, circa 1900 in carved walnut case.  Size Dial size 8", height 33"   Item: GWPC42
£450.00
Geoff Allnutt Clocks
Barograph with Thermometer, C1900
Mahogany cased barograph with integral thermometer, 8 day movement with new pen and ink, with drawer for spare charts.  Length 35cms, depth 22 cms, height 21cms Item: TH61
£1,250.00
Brewers hydrometer
Brewer’s Hydrometer
In it's original case with additional slide rule.  Box size  22 x 8 x 3cms, slide rule 30 x 5cms   Item: GWPC30    
£140.00
Brewers saccharometer
Brewer’s Saccharometer
With additional slide rule in original case.  Box size 22 x 8 x 3cms, slide rule 30 x 5cms   Item: GWPC31    
£160.00
Sovereign Scales
Cased Sovereign Scales Circa 1850
Card cased sovereign scales to weigh full and half sovereigns.  Unusual screw mounting base.  Scales size 10cms x 1.2cms Item: TH46
£140.00
Calculigraphie Circular Slide Rule
Circular Slide Rule
Double sided circular slide rule with several function, early 20th century, French signed Calculigraphie, H.C.  Dial size 50mm Item: TH50
£150.00
German Coin Sscales
Coin Scales
Circa 1800 manufactured in Germany.  In original case.  Length 13cms x width of bar 13cms Item: TH23
£120.00
Hydrometer
Hydrometer
With its original wooden case   Item: TH30
£25.00
Ivory thermometer
Ivory Thermometer
In original shagreen case.  Size 12.5 x 1.5cms Item: TH21
£40.00