Carpenter
Level
This ingenuous device uses a ball bearing in a narrow trough
to set level. The large screw at one end could be calibrated to determine
the amount of the tilt to the object. Made of aluminum, the exact age
of the object is undermined.
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The New York Institute for
Special Education
Kim Benisatto, Operations Manager
999 Pelham Parkway Bronx, New York 10469 USA
Phone: (718) 519-7000 Ext. 315 Fax: (718) 231-9314