Glass streamline Twaddell's no 6 hydrometer by J W Towers. Lead shot weight and paper scale. In blue cardboard tube. Range 138 -170. Twaddell no 6 hydrometer 1920-1960
Glass Twaddles' hydrometer by Griffin & Tatlock Limited. Lead weight and paper scale. In brown cardboard box. Range 0 - 3. Glass Twaddles' hydrometer
Glass Twaddle 0/6 hydrometer by Griffin & Tatlock Limited. Lead weight embedded inwax and paper scale. In grey cardboard box. Range 0 - 6. Twaddell 0/6 hydrometer
Glass Twaddell no 4 hydrometer. Lead shot weight in wax and paper scale. In brown cardboard box. Range 74 - 102. Twaddell no 4 hydrometer 1900-1960
Glass Twaddell's no 1 hydrometer. Mercury weight and glass scale. In black cardboard tube. Range 0 - 24. Twaddell no 1 hydrometer 1900-1970
Twaddell's No. 3 hydrometer, scale 48-74 (broken). Twaddell's No. 3 hydrometer, scale 48-74 (broken).
Glass Twaddle hydrometer by Griffin & Tatlock Limited. Lead weight sealed in red wax and paper scale. In brown cardboard box. Range 0 - 6. Glass Twaddle hydrometer
Glass Twaddell's no 4 hydrometer by J W Towers. Lead shot weight and paper scale. In blue cardboard tube. Range 0.74 - 1.02. Twaddell no 4 hydrometer 1920-1960