This transcript documents an appraisal session of various specialized optical instruments and related items, with the owner seeking valuation guidelines for downsizing their collection. The items include a job lot of optician-specific tools (color charts, metal ruler, hands-free magnifier, novelty sunglasses), a talking digital measuring jug, a facial ruler, an ultrasonic multi-function cleaner, a spectacle frame heater, two optical textbooks, a manual phoropter head (Magnum RT600), and a rare Dematteis visual field screener. The appraisal considers the rarity, condition, original cost, and potential market (opticians, students, collectors, partially sighted individuals) for each item. The session concludes with a cumulative estimated minimum value for all appraised items.
Optical Instrument Collection Appraisal
0:00 Introduction: The speaker is seeking an appraisal of various optical items to determine their worth for a future downsizing and sale.
Items: Includes rare color charts, novelty sunglasses, a hands-free magnifier, and a unique metal ruler.
Details: The color charts and metal ruler are specifically made for opticians, not generally available to the public, and the metal ruler is a rarer, older version. The hands-free magnifier is a good brand.
Key Takeaway: Estimated value for the lot is approximately £50, with the filters and ruler contributing most of the value.
Item: A digital measuring jug that announces liquid measurements (e.g., "milk, zero pints") via voice.
Details: Fully functional and essential for partially sighted individuals. Although it only verbally identifies "milk," it measures any fluid. Comes with its original box.
Key Takeaway: New, these cost £75. The appraised value for this used, working unit is £30-£40.
Item: A specialized facial ruler used by opticians.
Details: Shows signs of wear and tear, including some print erosion. It is an older model, presented in an "old-fashioned case," unlike modern plastic versions. A new one retails for £55-£70.
Key Takeaway: Appraised value is around £50, with its vintage nature potentially adding to its appeal.
Item: A device used by opticians to heat spectacle frames for adjustment.
Details: Visually tarnished but confirmed to be in full working order and has undergone health and safety testing/service. A new unit costs approximately £180.
Key Takeaway: Initial appraisal is around £30, though the owner believes it could fetch £60-£70 on platforms like eBay due to its functionality.
Items: "Ocular Histology" (1999 edition) and "Optics" (1996 edition).
Details: Both books are noted as being essential for optical students. Original retail prices were very high (£86 for "Ocular Histology"). "Optics" is described as mathematical, highlighting the academic requirements for opticians.
Key Takeaway: Estimated value is £15-£20 each for students, or £20-£30 for the pair.
Item: A manual phoropter head, a device used for refractive error measurement.
Details: Not in perfect condition; it requires cleaning and servicing of its lenses. Its manual clicking sounds are distinct from modern computerized versions. While still usable, its value is affected by the need for service.
Key Takeaway: The appraiser suggests an offer of £100, noting that serviced versions online command much higher prices. Collectors might also be interested.
Item: A rare, manual visual field screener, nicknamed the "visual field fish."
Details: A dedicated glow screener used for manual visual field testing. It's described as very rare and comes complete with its original box and user guide.
Key Takeaway: Due to its rarity and functional utility, the appraiser values it at up to £150.
Key Takeaway: The cumulative minimum estimated value for all items appraised is approximately £475.
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