A nice antique wood sliding ruler by Interlox Master Rule Mfg Co., NYC. A 72" Long wood ruler that has a nice sliding mechanism rather than folding. An early model, circa 1918 -1940s as the company moved its operations to White Plains in the 1940s. The ruler measures approximately 8"X1/2"X2 1/4" closed and is in very good condition.
A nice antique tool for the collector or anyone who loves rulers.
![Antique Sliding Ruler Interlox by Master Rule 106 - [vintage and antiques], Duckwells](http://cdn.shopify.com/s/files/1/0835/3607/products/il_fullxfull.2362023034_k8lo_grande.jpg?v=1593026559)
![Antique Sliding Ruler Interlox by Master Rule 106 - [vintage and antiques], Duckwells](http://cdn.shopify.com/s/files/1/0835/3607/products/il_fullxfull.2409626903_kcmo_grande.jpg?v=1593026559)
![Antique Sliding Ruler Interlox by Master Rule 106 - [vintage and antiques], Duckwells](http://cdn.shopify.com/s/files/1/0835/3607/products/il_fullxfull.2362023118_g351_grande.jpg?v=1593026559)
![Antique Sliding Ruler Interlox by Master Rule 106 - [vintage and antiques], Duckwells](http://cdn.shopify.com/s/files/1/0835/3607/products/il_fullxfull.2362023190_21ty_grande.jpg?v=1593026560)
![Antique Sliding Ruler Interlox by Master Rule 106 - [vintage and antiques], Duckwells](http://cdn.shopify.com/s/files/1/0835/3607/products/il_fullxfull.2409627173_ogn9_grande.jpg?v=1593026560)