Draft_SOW-_Brunson_Alignment_Telescopes.doc

Brunson 2022 Alignment Telescope Procurement Statement of Work

PURCHASE REQUEST NUMBER: XXXXXXX

1.0 INTRODUCTION

The Naval Surface Warfare Center (NSWC), Corona Division, Measurement Science and Engineering Department, Code MS21 requires the acquisition of two Brunson Model 2022 Alignment Telescopes for use with Harpoon Gages.

2.0 BACKGROUND

Navy Special Interface Gages (NSIGs) 3030980 and 3030885 both currently utilize the Brunson, Model #83 Optical Alignment Telescope, to make highly precise measurements on Harpoon Missiles for product acceptance. These NSIGs were both designed and fabricated in 1977. The Brunson Model #83 Alignment Telescopes were also procured and assembled with the NSIGs during this time frame. These gages and alignment scopes are periodically calibrated and re-certified on a regular basis.

During the latest calibrations of these alignment telescopes, laboratory technicians experienced problems with the telescopes adjustable micrometers which are used to make optical measurements. Brunson Instrument Company, the manufacturer of the telescopes, no longer manufactures the Model #83 or any of its parts, and therefore can no longer support repair of the telescopes.

Although the Brunson Model #83 Alignment Telescope is no longer available, Brunson now makes a new replacement alignment telescope that meets or exceeds the specifications of the Model #83. This new telescope is the Brunson Model 2022. Although none of the internal parts are interchangeable, the outside diameter is the same and the other dimensions are similar enough for the telescope to be utilized with the NSIGs in their current configuration. This is the only alignment telescope currently commercially available that can be used with these NSIGs in their current configuration.

3.0 SPECIFICATIONS

All equipment must be NEW with all warranties meeting or exceeding the original equipment manufacturers (OEM) offerings.

Magnification: 4 times at zero to 46 times at infinity

Focusing Range: Zero to infinity

Straightness of Line of Sight: + 0.002” (0 to 50’); + 0.004” (50’ to 100’); 0.5 arcseconds beyond 100’

Built-in horizontal and vertical optical micrometers

Displacement: + 0.050”, direct reading to 0.001”.

Accuracy: + 0.0002” over full range.

Field of view: 37 minutes at infinity, 42 mm at zero focus

Reticle: Dustproof; cross-pattern with single lines top and right, paired lines bottom and left.

3.0 SPECIFICATIONS (cont.)

Eyepiece: Fully erect image; diopter scale

Focusing knob: drum graduated to show focusing distance in feet

Telescope Barrel Material: Hardened stabilized stainless steel Barrel diameter: 2.2498 +0.000/-0.0003”, Meets A.I.A. specifications

Barrel length: 9 7/8”

Overall length: 17 ¾”