Antique Electrical Blue Print Diagram early 1900's ? Technical School Scientific

Description

Please inspect all pictures for size and condition.  Most of my items are from estate auctions—there will be imperfections and might need cleaning or repair—but I try to show flaws/condition in the pictures. Depending on the light...the pictures may not reflect the true color...if color is an issue please message me and I can check for you. And thank you for looking!
Antique Weston model 45 D.C. Volt Meter. Serial is 57666. Wood case is solid, Bottom 4 and top 2 bumpers are in place and in good condition. The meter face is clear and looks good.  The label inside is in place, in original frame and the plastic covering is also in good shape and clear.  Leather handle is original and in great shape. Looks great for its age.  Being sold as is, an antique meter.  Do not know if it works or not.