Calibration tool

Description

FIG. 1 is a front, top and side perspective view of the calibration tool showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a bottom elevational view thereof.

Referenced Cited
U.S. Patent Documents
D242775 December 21, 1976 Williams, Jr.
D257857 January 13, 1981 Levenberger et al.
D308174 May 29, 1990 Rijlaarsdam
2967336 January 1961 Morehead
5067249 November 26, 1991 Terrigno
5115569 May 26, 1992 Kubo
5134784 August 4, 1992 Atienza
5150525 September 29, 1992 Lai
Foreign Patent Documents
24298 1912 GBX
Other references
  • E. Faber Co.; Triangle; .COPYRGT.1901; p. 12.
Patent History
Patent number: D367822
Type: Grant
Filed: Nov 29, 1994
Date of Patent: Mar 12, 1996
Inventor: Roger Grabczynski (Whitmore Lake, MI)
Primary Examiner: Antoine Duval Davis
Attorney: Dennis H. Lambert
Application Number: 0/31,595
Classifications
Current U.S. Class: Linear Or Distance (9) (D10/70)