Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. With Leather Case Gahendra Martini Rifles & Parts Measuring 1 1/2" across

Measuring 1 1/2" across

(SE or hkp)- Sachsische Emaillier u

The top of the visor has a lovely pattern of checking and crazing in the black enamel

It also made other products and tools

Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. With Leather Case Gahendra Martini Rifles & Parts Measuring 1 1/2" acrossOriginal item: Only One Available. Measuring 19 inches in length, this is a very nice WWI Era Model 1918 Battery Commanders periscope. In X 7. 5 power, these were used to help view and plot artillery attacks from behind cover, to avoid exposing the commander to danger. The bottom of the periscope still has the manufacturers markings: TRENCH PERISCOPE NO. 10 X7. 5 MODEL 1918 M. F. G'D BY WOLLENSAK OPT. CO. ROCHESTER, N. Y. U. S. A. No. 4517 R. G. C.