比例精度与精度：数字的真正含义

规模规格可能会令人困惑。 “0.1g 准确度”的实际含义是什么？ “可读性”与“准确性”相同吗？ 本指南以纯语言解释比例规格，以便您可以选择正确的比例并了解您的阅读内容真正告诉您的内容。

快速回答

准确性是接近真实权重的程度；精度是多么一致。 0.1g 的比例可以检测到 0.1g（十分之一克）的差异。 对于花，0.1g 工作正常。 对于浓缩物，您需要 0.01g 或 0.001g，可读性 = 显示最小增量。 准确度 = 实际测量可靠性。 它们是相关的，但不相同。

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了解规模规格

For statistical concepts in measurement accuracy, NIST 工程统计手册 provides technical guidance.

可读性（分辨率）

它是什么： The smallest weight increment the scale displays.

Example:

• 0.1g 可读性显示：1.0、1.1、1.2 等。
• 0.01g 可读性显示：1.00、1.01、1.02 等。
• 0.001G 可读性显示：1.000、1.001、1.002 等。

Key point: This is what you SEE, not necessarily what's TRUE.

Accuracy

它是什么： How close to the actual weight the reading is.

Example:

实际重量为3.48g或3.52g时，标尺可能显示3.5g，准确度告诉你预期的偏差。

常见的精度规格：

• “±0.1g”表示读数最多可关闭 0.1g
• 3.5g的读数实际上可能是3.4g到3.6g

精度（可重复性）

它是什么： How consistently the scale gives the same reading for the same item.

精度好： Weigh same item 5 times, get 3.50g each time.

精度差： Weigh same item 5 times, get 3.48g, 3.52g, 3.49g, 3.51g, 3.50g.

关系

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不同的精度在实践中意味着什么

0.1g 精度（口袋秤）

您可以可靠地衡量的内容：

• 1g 及以上充满信心
• 0.5g 精度合理
• 低于0.5g变得不可靠

Best for:

• 验证八分之一、四分之一、盎司
• 一般花称重
• 日常使用

不适合：

• 单半克购买
• 浓缩
• 精度计量

阅读解读：

当规模显示3.5g时，实际重量可能为3.4-3.6g。

0.01g 精度（精密口袋秤）

您可以可靠地衡量的内容：

• 0.1g 及更高的信心
• 0.05g 精度合理
• 适合少量

Best for:

• 验证较小的采购
• 更准确的花称重
• 预算浓缩物称重
• 更好的食用剂量

阅读解读：

当秤显示3.50g时，实际重量可能为3.48-3.52g。

0.001g 精度（毫克级）

您可以可靠地衡量的内容：

• 0.01g 及更高的信心
• 0.005g 精度合理
• 极致精度

Best for:

• 浓缩
• 精确的食用制作
• 科学准确性
• 专业用途

阅读解读：

当量表显示3.500g时，实际重量可能为3.498-3.502g。

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精度与精度图示

两者都很好（理想）

读数：3.50、3.50、3.50、3.50、3.50

真实重量：3.50g

Result: Perfect—accurate and precise.

精确但不准确

读数：3.55、3.55、3.55、3.55、3.55

真实重量：3.50g

Result: Consistently wrong. Needs calibration.

准确但不准确

读数：3.48、3.52、3.49、3.51、3.50

真实重量：3.50g

Result: Averages correct but individual readings vary. Environmental issue likely.

两者都没有（差的规模）

读数：3.45、3.58、3.42、3.61、3.49

真实重量：3.50g

Result: Unreliable. Replace or repair scale.

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与目的匹配的准确性

大麻花

底线： 0.1g works for most flower purposes. 0.01g is better for small amounts.

For Concentrates

Bottom line: 0.001g is really the only appropriate accuracy for concentrates.

For Edibles

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Understanding Margin of Error

What ± Means

When specs say "±0.1g":

• Reading of 5.0g means actual could be 4.9-5.1g
• Reading of 3.5g means actual could be 3.4-3.6g

Error Compounds with Small Weights

At larger weights:

5.0g ± 0.1g = 2% potential error

At smaller weights:

0.5g ± 0.1g = 20% potential error

Lesson: Accuracy matters more for smaller amounts.

Why Cheap Scales Are Worse

Better scales:

• Tighter actual accuracy than spec
• More consistent
• Better at edges of range

Cheap scales:

• May not meet stated spec
• Worse at small weights
• More environmental sensitivity

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Testing Your Scale's Accuracy

Using Known Weights

Calibration weights (best):

• Known precise weight
• Use to verify and calibrate

Coins (adequate):

• US nickel = 5.00g
• US penny (post-1982) = 2.50g
• Stack for larger weights

Precision Test

1. Weigh same item 5 times

2. Record each reading

3. All same = good precision

4. Variation = precision issue

Accuracy Test

1. Weigh known weight (calibration weight or coins)

2. Compare to known value

3. Close = good accuracy

4. Off = needs calibration or replacement

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Improving Your Readings

Environmental Factors

For best accuracy:

• Level, stable surface
• Away from air currents
• Consistent temperature
• No vibrations

Usage Factors

For best accuracy:

• Calibrate regularly
• Fresh batteries
• Let scale warm up
• Don't rush readings

Scale Factors

For best accuracy:

• Quality brand
• Appropriate accuracy for task
• Proper maintenance
• Not exceeding capacity

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Quick Reference

Accuracy by Scale Type

When Readings Matter Most

• Verifying purchases: Need accuracy
• Consistent dosing: Need precision
• Making edibles: Need both
• Casual use: Either works

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Summary

Understanding scale specs helps you:

1. Choose right accuracy for your needs

2. Interpret readings correctly

3. Identify problems when they occur

4. Not overpay for unnecessary precision

For most cannabis flower use, 0.1g accuracy is sufficient. For concentrates or precision work, 0.001g is essential. Don't be fooled by extra decimal places—readability isn't the same as accuracy.

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This guide is for educational purposes. Always comply with local laws regarding cannabis.