Early 1900s laboratory rarity

rarities here they are 👀 very very interesting lot of #medicoantiques, composed of:
N. 1 #cidroscope (alcohol content meter used in the production of #cider) or in the measurement of alcoholic solutions in #antique #chemistry laboratories, very early #twentieth century, L'Exact brand, complete with beautiful #period instruction booklet
N. 1 #antique #alcoholmeter #from the late #nineteenth century in amazing conditions
N. 1 large #anti-vial of #tritisol (potassium permanganate) for #laboratory produced by Merck (Germany) #era #30s
All #rare pieces that are a must in a beautiful display case; for #collecting #medicaltools and #chemicalantiques.