Early trial lens set by Paetz & Flohr, Berlin
On application
An early complete trial lens set by Paetz & Flohr, Optiker u. Mechaniker, Berlin, C 1880 A German ophthalmic trial lens set with the original testing frames and and lenses. The mahogany case constains c0ncave and convex spherical lenses, without rims with the powers: Convex 2 – 60, concav with powers 2 – 36, four blue strips of glas of various intenties and a trail frame with two clips on the top to hold the lenses. Measurements 36 x 22 x 6 cm.
