Criteria

Dimension

Description

Preferred

Min.

Max.

Handle Length

• Bare

• Gloved

5”

5.5”

4”

4.5”

Length of grasping area when gloves are not used.

Length of grasping area when gloves may be used.

Handle Diameter

• Power Grip

• Precision Grip

1.5”

0.4”

1.2”

0.3”

1.8”

0.5”

Diameter throughout entire grasping area when tool will be used with full hand grip.

Diameter throughout entire grasping area when tool will be used with the finger tips.

Handle Span

3”

2”

4”

Maximum distance between the two outer grasping surfaces when tool is engaged.

Tool Weight

• Power Grip

• Precision Grip

2.5 lb

1.0 lb

Maximum weight including attachments for one-hand tool use.

Triggers and Activation

1”

2-finger activation; 4-finger triggers only on suspended tool systems.

Vibration

Handles should have vibration-absorbing material (compressible rubber or closed-cell foam).

Accessories

• Suspend hoses from above.

• Use light weight hoses.

• Use dyna-swivel connectors.

• Use exhaust mufflers.

• Provide security handles.