This WW1 era Verner's Pattern MK VI prismatic marching compass was the forerunner of the more common MK VII and MK VIII models used during WW1. Although unsigned, the majority of these compasses were made by E. R. Watts, mostly around the pre WW1 era between 1908 to 1912.
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This was used to study and analyse the rate at which worms would bury stones in the ground. Rotating barrel ink recorder. Darwin's grandson Erasmus Darwin Barlow was later chairman. Charles G. Darwin (1887 - 1962), Horace's nephew, took over as chairman of the board.
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Real quality brass dividers from London maker of Hughes and son and are ex-military ,probably for flight planning for the newly formed Royal fling corps.They an in as good condition as when new.There is wear to the leather surface especially with rubbing where the hooks are as well as outer edges.
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So we have a piece of heavy old laboratory equipment very industrial looking. Perished rubbers crazing to glaze in areas may have odd small chip but nothing jumping out at me. Whilst taking photos spotted some damage to base resulting in an hairline crack coming from it seen in photos. Great display piece Approximately 45 cm tall 30 cm diameter 10kg Please note postage costs take into account insurance and amount of packaging used to protect our items not just the price of courier.
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Engineering tool mini drafter having reasonable price. Look Photos For Actual Image Of Product. All Work is Hand Made. Each item is made of best quality material.
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Vintage Rubicon Company Galvanometer Cat No. 3401-H Philadelphia PA 1945. 6 Volt, 24 ohms resistance, 5.5 sensitivity. I supplied 6 volts to the unit and it did light up as can be see in the pictures. Not sure how to test any further so the unit is being sold "AS-IS." Unit is in decent condition for its age, no major damage to the wood box, just normal wear for its age. Inside looks clean, but not sure if its complete or damaged in anyway.
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