Hand-held tool containing a removably attachable object sensor

1. A hand-held power tool comprising:

a. a housing including a drive mechanism and motor provided with a rotary output shaft aligned along a tool axis;

b. a handle portion aligned along a handle axis, the handle portion having a power activator switch mounted thereon;

c. a power supply end; and

d. a removably attachable portion releasably attachable to a portion of one of the housing or the power supply end of the hand-held power tool that is substantially normal to the handle axis, the removably attachable portion comprising an object sensor and a level, wherein the housing comprises outwardly projecting housing flanges and housing grooves and the removably attachable portion comprises two inwardly projecting portion flanges and portion grooves and wherein the flanges and grooves on the housing cooperate with the flanges and grooves on the removably attachable portion to releasably affix the removably attachable portion to the housing.

2. A hand held power tool comprising:

a. a housing, a drive mechanism contained within the housing,

b. a handle portion aligned along a handle axis; and

c. a removably attachable portion removably attachable to a portion of the housing that is substantially normal to the handle axis wherein the removably attachable portion comprises an object sensor and a level and wherein the object sensor has a planar surface that is parallel to the portion of at least one of the housing or the power supply end, wherein the housing further comprises at least one flange formed thereon and the removably attachable portion contains at least one flange and wherein the flanges cooperate to releasably attach the removably attachable portion to the housing.

3. A hand held power tool comprising:

a. a housing, a drive mechanism contained within the housing,

b. a handle portion aligned along a handle axis; and

c. a removably attachable portion removably attachable to a portion of the housing that is substantially normal to the handle axis wherein the removably attachable portion comprises an object sensor and a level and wherein the object sensor has a planar surface that is parallel to the portion of at least one of the housing or the power supply end, wherein the housing comprises outwardly projecting housing flanges and housing grooves and the removably attachable portion comprises two inwardly projecting portion flanges and portion grooves and wherein the flanges and grooves on the housing cooperate with the flanges and grooves on the removably attachable portion to releasably affix the removably attachable portion to the housing.

4. A portable power tool comprising:

a. a housing comprising a drive mechanism and a motor;

b. a handle portion attached to the housing and aligned along a handle axis and having a power activator switch mounted thereon, wherein the handle has a power supply end;

c. a battery engaged with the power supply end and having at least a portion of the battery extending substantially perpendicular to the handle axis; and,

d. an object sensor attached to a mounting surface on the power supply end that is substantially normal to the handle axis.

5. A power tool comprising:

a. a housing comprising a drive mechanism and a motor;

b. a handle portion extending from housing and aligned along a handle axis, the handle portion having a power activator switch and a power supply end;

c. a battery engaged with the power supply end and having at least a portion of the battery extending substantially perpendicular to the handle axis; and d. an object sensor attached to a portion of the power supply end that is nearly normal to the handle axis.

6. A hand-held power tool comprising:

a. a housing including a drive mechanism and motor provided with a rotary output shaft aligned along a tool axis;

b. a handle portion aligned along a handle axis, the handle portion having a power activator switch mounted thereon;

c. a power supply end; and

d. a removably attachable portion releasably attachable to a portion of one of the housing or the power supply end of the hand-held power tool that is substantially normal to the handle axis, the removably attachable portion comprising an object sensor and a level, wherein the housing contains a bubble level in a plane essentially perpendicular to the tool axis.

7. A portable hand-held power tool comprising:

a. a housing including a drive mechanism and motor provided with a rotary output shaft aligned along a tool axis and a handle portion aligned along a handle axis, the handle portion having a power activator switch mounted thereon;

b. a battery attached to the housing and in electrical connection with the motor for providing electrical power to the drive motor; and

c. a removably attachable portion releasably attachable to the battery, the removably attachable portion having an object sensor and a level.

8. The hand-held power tool of claim 7 wherein the hand-held power tool is powered by AC energy.

9. The hand-held power tool of claim 7 wherein the hand-held power tool is powered by a battery.

10. The hand-held power tool of claim 7 wherein the hand-held power tools is powered by electrical energy.

11. The hand-held power tool of claim 7 wherein the hand-held power tool is powered by compressed air.

12. The portable hand-held power tool of claim 7 wherein the battery has at least one slot formed thereon for releasably affixing the removably attachable portion to the battery.

13. The hand-held power tool of claim 7 wherein the level is parallel with the tool axis so as to advise of the inclination of the tool axis relative to a horizontal plane.

14. The hand-held power tool of claim 7 wherein the hand-held power tool is a portable drill.

15. The hand-held power tool of claim 7 wherein the hand-held power tool has a rotary shaft.

16. The hand-held power tool of claim 7 wherein the hand-held power tool is a reciprocating saw.