MIL-S-48573 Sightunit, M64This specification covers one type of instrument known as Sight-unit: XM64E2 used with the Lightweight Company Mortar, 60MM XM224 \(See 6.1. Throughout this specification this instrument is referenced as "sightunit." This sightunit is composed of Telescope, Elbow: 11733780 and Mount, Telescope: 11741796. This sightunit has radioactively illum-inated scales, level vials and reticle.

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MIL-S-48573(MU)

4.3.2.3 Sightunit.- Examination and tests related to Section 3 here-

in shall be performed in accordance with the sampling plans specified in

Tables I and II herein. Examination and tests for packaging, packing and

marking shall be in accordance with MIL-P-14232 and Section 5 herein. The

tabulated classification of defects in Tables I and II shall constitute

the minimum inspection to be performed by the supplier after first article

approval and prior to Government acceptance or rejection by item or lot.

TABLE I - 100:.PERCENT (100%) INSPECTION

TEST PROCEDURE

REQUIREMENT

CHARACTERISTIC

NO.

4.6.1

3.5

Telescope clamping mechanism

ThE test in Table I shall be conducted at a temperature between

NoTE:

+60� and +90�F.

4.3.3 Acceptance and rejection.- The right is reserved to reject any

unit of product found defective during inspection whether the lot as a

whole is accepted or rejected. Rejected units may be repaired or corrected

and resubmitted for inspection with the approval of, and in the manner speci-

fied by the procuring activity.

4.4 Special sampling.

4.4.1 General.- Three sightunits shall be selected at random from

each 100 produced. The samples shall meet the requirements and tests in

Table II.

TABLE II

TEST PROCEDURE

REQUIREMENT

CHARACTERISTIC

Applicable drawings

3.3, 3.3.1 &

Fabrication

301 l

and' specifications -

3.3.2

Visual

MIL-F-13926 - Visual

3.4

General specification

302.

4.4.2 Failure of sample.- Should any one item of a special sampling

fail to meet the specified test requirements, acceptance of the represented

inspection lot shall be suspended by the Government until necessary correc-

tions have been made by the contractor and resubmitted samples have been

approved (see 4.3.3).

4.5 Inspection equipment.- Except as otherwise provided for by the

contract, the contractor shall supply and maintain inspection equipment

in accordance with the applicable requirements of MIL-I-45607.

4.5.1 Government furnished inspection equipment.- Where the contract

provides for Government furnished test equipment, supply and maintenance

of test equipment shall be in accordance with the applicable requirements

specified in MIL-I-45607.