Section I. IDENTIFICATION AND DESCRIPTION

TB 55-5210-251-35/1

Section I. IDENTIFICATION AND DESCRIPTION

1. Test instrument identification (unit-under-test). This bulletin provides instructions for the periodic calibration of

blade protractor, model PE-105. It is to be used by personnel trained and qualified in the use of calibration equipment.

2. Descriptive data.

a. Identification

Nomenclature ----------------------------------------------------------------------------- Protractor, blade

Federal stock number ------------------------------------------------------------------ 5210-394-5094

Manufacturers ---------------------------------------------------------------------------- Hamilton Standard Division of United

Aircraft Corp., and Taft-Pierce Co.

Manufacturer's model number -------------------------------------------------------- PE-105

Size------------------------------------------------------------------------------------------ 24 in. long X 10 in. high X 3 in. wide

Weight -------------------------------------------------------------------------------------- 6 pounds (approx)

b. Calibration

Time required ----------------------------------------------------------------------------- 1 hour (approx)

Technique---------------------------------------------------------------------------------- physical

3. Forms and records. Maintenance forms, records, and reports which are to be used by calibration personnel at all

calibration levels are listed in and prescribed by TM 38-750. Annotate DA Form 2416, Calibration data card, in

accordance with TM 38-750.

4. Calibration description. Test instrument parameter and performance specifications which pertain to this calibration

are listed in table 1.

Table 1. Calibration description

Test instrument parameters

Performance specifications

Angle range

0°to 24°from horizontal

Accuracy

+.002 in. beam linearity

5. Reporting of errors. The reporting of errors, omissions, and recommendations for improving this publication by the

individual user is encouraged. Reports should be submitted on DA Form 2028, (Recommended Changes to

Publications) and forwarded direct to Commanding General, U.S. Army Aviation Systems Command, ATTN: AMSAV-R-

M, P.O. Box 209, St. Louis, Missouri 63166.

Section II. EQUIPMENT REQUIREMENTS

6. Equipment required. Table 2 identifies the specific equipment used in this calibration procedure. When any of the

equipment is not available, equivalent items may be substituted provided they meet minimum specifications.

Table 2. Minimum specifications of equipment required

Item

Nomenclature

Minimum use

Calibration equipment

No.

specifications

identification

GAGE BLOCKS

RANGE: 0 to 6.0625 in.

5210-516-3825

ACCURACY: +.0001 in.

DIAL INDICATOR

RANGE: 0 to .008 in.

5210-273-9791

ACCURACY: .0005 in.